Well this is just not true. Tekken is certainly not balanced, we see the same few top picks every season from the top players. People like to throw out Rangchus TWT win as a reasoning as to why Tekken is actually balanced.
That just absolutely horrible use of argumentation for the fact that Tekken is or isnt balanced. We have ONE case where a "low tier" wins any kind of a major, literally just one. Arguing that the game is balanced because of a single real upset ever is insanity. The truth is that top tiers dominate tournament play every season. Rangchu didn't win because Tekken 7 is balanced, Rangchu won despite Tekken 7 not being balanced.

But yeah I do agree that if you are not aiming to become a competitive player, you shouldn't look at tier lists too much.