This debate happens all the time, but there isn’t a right answer, it just depends on the player.
Guys like Pulisic, Yedlin and Brooks are super talented and playing a lot so it’s good. Hopefully Adams, McKinnie, Weah are talented enough to make it work and help their development.
Is a guy like Matt Miazga getting better in Europe? Maybe but I wouldn’t say that’s a for sure. There’s lots of guys like that too, that maybe aren’t helping themselves in Europe.
Then you have guys like Paul Arriola and Aaron Long who look to be good contributors and certainly helped themselves with MLS playing time.