Is this the era of "well-rounded" meta dominating?

[NoSmilez]

As a whole everyone is getting better. Crosstraining is mandatory nowadays. There is also more money in the game so you have a better variety of coaches and training partners. I don't think professionals have to work with amateurs or average joes unless the gym is very small.

Fighters can't really get away with being one dimensional unless it's HW. LHW in the UFC became a kickboxing division but it was by design of the promotion.