Here is some harsh reality of a different sort.
There are a couple of guys, admitted Star Wars fans, who call themselves The Target Audience on Youtube. They took it upon themselves to watch all of Star Trek beginning, of course, with TOS.
They claimed to know next to nothing about Star Trek beyond some recollections of ST09. They admitted/claimed going into their reaction watch of TOS expecting it to be similar to ST09 and more like the camp of the 1960’s Adam West Batman series.
They did not expect what they got: a straight up action/adventure series that took itself seriously and explored interesting ideas. Throughout the entire run, including third season, they rarely seemed to be disappointed with the show, even liking the third season generally more than a lot of long time fans seem to. They really liked the concept, setting and all the characters.
Bottom line is they liked the show a lot more than they expected to and even thought much of it still holds up well today.