Not to speak for the poster, but the aliens also actually speak in English mouth shapes. Most glaringly in this one is Spock and Saavik talking in the turbolift in TWOK in "Vulcan" only for the actors to actually be speaking English.
Say what you want about Klingons in Discovery and TUC, for that matter, but at least I felt like they were aliens at that point. At some point in time, that "suspension of disbelief" gets strained quite a bit with just English.
Apart from distance between planets, travel time, time dilation, and everything else, the law of probability is that two species from other planets ever meeting-- one is far more likely going to win the lottery and compared to that it's easier to be splattered by a motorcar or probably even via motorbike or, better yet, miniscooter... But if they're watching Earth shows and seeing things as accurate as possible, forgetting about how many years in the future they would be compared to us... but I'm all over the map and need to get back to why our entertainment industry can only go so far with how aliens might look or why they can only do so much:
Here's the rub: Back then it was progressive to show languages other than English, translation computer, etc. If done incessantly or even for too long, it disrupts the flow of the art. Belief also gets strained if audiences can't understand what's going on, and given today's illiteracy rates the problems are worse than closed captioning of languages on a screen and there's a valuable market right there (over thirty two
million people) to not bypass...
Here's the bigger rub: Another sci-fi show, around 1964 or 1965, did a story where the only humanoid characters were the Doctor and his companions. Everyone else was an actual alien, though the bees had earth mouthy things too. Even then, real bees have mouths and make buzz noises so it wasn't too far off in that regard.
Here's the problem regarding the bigger rub that also pertains to the other rub above: People found the story too confusing, not engaging, etc. Despite being experimental. Nobody was hostile to "The Web Planet" as such, but who needs sci-fi aliens to make a correlation to a lot of humanity's own rich past dealing with folk who don't look and sound identical and no difference is immune to that fact... since then, non-humanoid aliens have been relegated to comedy spoofs.
Then again, Doctor Who's "The Curse of Peladon" showed a mix and balance and all was well. Shame that Alpha Centauri's voice actor was told by the director to play it out in a (pejorative, based on stereotype) way... but if Alpha was to act in an Alphan way... so species-ism is inevitable for the sake of ratings because nobody is making this stuff for the sake of freedom.
But if aliens came down in real life, are they going to look like big bugs or lizards* for people to be apathetic or confused or instantly antagonistic against? Or will they try to look like us to prevent everyone from going nuts before they eat us (with nuts and a yummy raspberry vinagrette)? Which reminds, oddly, if sci-fi is some big conspiracy theory to prepare the masses for showing real life aliens, there's no evidence to show "grooming" of any sort. Only Hollywood making shows, even cashing in on how bad capitalism is.
Suspension of disbelief is a tightrope, not everybody walks the same one but it's still a rope allegorically. Which audiences serve the greatest good? A bunch of ropes or a single, more convenient, cheaper one?
Maybe "V" was the most accurate sci-fi show of them all, even if it took the cynical route** - it's not impossible for species to not live in harmony, usually in symbiotic relationships, many animal*** species engage in those things, which might be why Darwin didn't want to pay attention to that while writing his happy little laws?
Dang, my INTP is showing again. Need to stop drinking coffee and stick to INFP mode.
------------------------------------------------------------------------------------------------------------------------
** Again, for entertainment and ratings and what they're for, since humans and lizards sharing tea in a picnic will generally make for a very boring four hours, regardless if it's broken into two two-hour segments or not. Again, this is all for entertainment and not an actual documentary that would turn people off even more quickly than when they try to tune into CSPAN
*** animals don't get classified as "sentient", or there's a form of sentience humans haven't thought about yet?
* or worse, a fleet containing scores of fifty foot alien cows might pose an
udder disengagement problem for viewers if they come down asking for a cup of sugar and to
proselytize the moon they jump over while the dish and spoon ran off to do unspeakable things, often with cereal and milk... And now that
all that popped into my mind, imagine the cow milk scene from "The Last Jedi" being what the movie was about and given one hundred twenty
minutes of time instead of
a mere two... talk about a plot that never does anything, much less moo-ves forward...
