DND_Reborn
The High Aldwin
That isn't the same thing as keeping fighters down. Maybe they aren't raised to a level to make you happy, but that doesn't mean people aren't offering suggestions to make them better.It absolutely is, as evidenced by all the people who admit it isn't a balance issue, just that they think a fighter even approaching pro athlete capabilities, much less fantastic expectations is a 'superhero' and you are NOT allowed to have those in THEIR D&D.
If that is how your game is played, it is more an issue with the DM and your play style and how they don't work with the current system.You want a fun fighter, you get out of the game or sit there and eat your gruel while the wizards get to do whatever they want.

What you suggest isn't at all my experience. Do I think fighters (and other martials) need some improvements? Most certainly. Do I think they are sitting on the side lines or any other such thing? No at all.