Any threat in a movie has an impact on TV shows, especially those taking place at the same time. In First Contact Earth has to survive Borg Free because it is Borg Free in DS9 and VOY. Worf cant be killed because he is on DS9. So any threat to Worf is moot. There is very little on Enterprise that changes what we know of TOS, TNG, DS9 or VOY. Hell, TOS contradicts it self more than ENT does.All of them have threats that challenge the future/present of the Trek Universe. Its kind of what movies are supposed to do.
"Shows up TOS"??? What does that even mean? That it makes TOS look bad?
Yes but if an event in Insurrection effected it's present, it wouldn't effect DS9 or Voyager's past. An event in Enterprise effects DS9 before it even starts.
Now as I say Abram's Trek does that. Vulcan's history rewrites a fair bit of TOS, TNG and Voyager.
Yes I think it does make TOS worse off in comparison. That things were so more advanced in TNG than TOS was to be expected (except the human like androids of course, they vanished after TOS!)
And as I say if Kirk is merely following in Archer's (his childhood hero, according to UK marketing) footsteps, rather than setting the trend, if his Enterprise is mearly named after another pioneer of the warp age it undermines him. IMO.
How does Archer undermine Kirk in any way? Kirk is not the first man to captain a starship. The 1701 isn't the first spaceship called Enterprise. These are facts established in TOS and the movies. Kirk has people he looked up to and admired. People he thinks of as trailblazers and trendsetters. People in who's foot steps he followed. He very well might be the greatest captain of his generation, but there were great captains before Kirk. Again, this is established by TOS.
Kirk as a "superhero" is more a development of the movies. In TOS Kirk was proud of his ship and crew, as any captain should be. He was also a guy who was doing a job and trying to do it the best he could but was also just one of at least 12 guys doing that same job. Those 12 other guys might be doing as good or even a better job as Kirk. ( Okay a few kinda screwed up

The 1701 its self is not a trailblazer. It's tech is all standard issue. Its on a mission that it shares with other ships. We cant conflate the fact TOS was the first Trek show with the ship or the crew of the 1701 being the first.