I don't know what show you were watching, but TOS was anything but consistent and scientifically realistic. Star Trek doesn't make things up when it wants to tell a story? Do you remember
A Piece of the Action, or Abraham Lincoln? For Christ's sake...
You are completely correct. I am not talking about the obviously bad decisions, mistakes and screw-ups along the way. TOS was made under tremendous time pressures, with low budgets, and all kinds of other constraints, just like all Star Trek often is, but that is one of the reasons for making a movie from a TV premise. Hopefully one has the time, money and resources to do things right, and eliminate stupid mistakes.
The point is, Star Trek TRIES to follow a construct. I am not saying that they always get or got it right. Goodness knows they didn't, and much of Star Trek is horrible, but when it is good, it can be really, really good. That is why bad ST frustrates fans - there is so much potential in the groundwork already laid - it disappoints so much when it misses the mark.
As far as TOS, it is very true that in the creation of the series, believability was a highly over-riding factor in making decisions. Much of this ground work got tossed aside as the pressure of making the show set in, and GR and other talented people left for hopefully greener pastures. Honestly, much of early ST is CRAP, I'm not blind to it.
The thing about stuff from TOS contradicting the concept I am putting forward is that anything from TOS was created awfully early in the creation of the construct. ST has now had 40 years of development, refinement and review. A dumb mistake now is much more glaring than something far more stupid done way back then. Does anyone seriously believe that the makers of TOS actually believed anyone would be discussing series continuity 40 years later? I doubt it.
Your response strikes me as arguing about the kind of details that I as a ST fan regard as unimportant. Focus on the global message, and please take it easy... Christ's sake is far more important than any of this friendly discussion.