If you didn't like the "modernized plot" they opted for, don't watch it.
Actually it's not modernized at all. Gigantic ship/entity destroying everything in it's path was in Star Trek 1, 4, 8, 9, and 10 and of course many scifi movies. Time travel was not only heavily used in all of the tv shows but was also used in Star Trek 4. Seriously the plot was so tired and cliche that it doesn't take long to figure out where it's headed. There are ways in which this movie feels modern and that is in that there is less talking, lots of cgi and poorly choreographed fight scenes that involve jerking the camera around so you can't see what's going on, and of course just being a reboot, remake, prequel etc makes it "modern", this seems to be the decade of unimaginative movie making. Heck the previews before the feature were from Transformers, GI Joe, and Terminator 4! Redressing an old show/movie with new cgi doesn't remake the storytelling, sorry but Star Trek 11 is not as radically different from other Star Trek movies/shows as everyone is making it out to be.
I'm not surprised to see people think it's different, just as I'm not surprised that teenagers (as a teacher I know this for a fact!) are not aware that the current bulk of horror movies are remakes of 80s movies, and the action blockbusters are movie versions of cartoons. I would like to see scifi/fantasy/horror/heck just an action movie that's not (a) a remake, (b) a reboot, (c) an unnecessary prequel, (d) based on a comic book or (e) based on a series of novels targeted at young adults. Would it be too much to ask for some originality?