They're good, but even the best make mistakes.
Wiggins is a bad defender, a streaky shooter, and doesn't offer much anywhere else. At his price point, he is extremely overrated.
Reading T-Wolves' fans thoughts about this move, they seem thrilled. A lot of comments talking about how he consistently looked lost on defense, lazy on offense, etc. I read a story about how his basketball IQ was so low that his coaches made him watch film to better understand how the game is to be played, and he was caught playing video games instead.
The guy has showed almost 0 improvement in 5 years.
I think GS fell in love with athleticism, and they're gonna suffer as a result, I'm predicting.