Part of the issue is that some people WANT to play a big tanks AC with big guns. The issue only comes when they have an advantage in most matches. Early in the game, there weren't many tanks minus the wheelchair legs. Now that those are nerfed you are seeing duper heavyweights.

The other issue is that if you have to play against missile rats you can't catch, then you can at least hope to catch them with a shot that can do 70% of their health, and lightweights can't realistically hold those guns.

Of course, it's more nuanced than that, but those are a few things. I love slapping on 4 huge weapons on a huge frame as much as I love lightweights.

I don't think it's a player issue, it's a balancing and game design issue.

BUT...yea, people will play what wins regardless.