Here’s one: When Gene Roddenberry was developing Star Trek he mandated there be no time travel plots.
In the new movie they went back in time and COMPLETELY rewrote the Star Trek universe. This is nothing more than vandalism IMO.
And yes I know it’s just a movie.
They went back in time in several of the different shows and movies.
Once on the original when they went back to assure a space launch and kidnapped a pilot and another one in the movie where they brought whales aboard.
IMO, (yes, I’ve seen the new movie) going back in time DOES destroy the Prime Directive theory.