I think, outside of the final 2 minutes of a game, Weber is a very good game day coach. His players play very hard.
Weber's biggest issue, imho, is recruiting and retaining players. Which is why I don't think he's a great power 5 coach. But he's had great success with talented teams (first few years at Illinois with Self's players and his first year or two at KSU with Martin's guys). That's what makes this year's KSU squad seem like a pretty good team. Weber managed to get 2 legitimately good big12 players...and surrounded them with veteran guys, plus they're coming off a deep tournament run.
KSU is gonna be pretty good, it helps that the big12 is having a down year. The Weber criticism is excessive here because he's at KSU and held a funeral for Self. He's a good coach. He has some enormous flaws though.