I don't think enough people realize that the league is on pace for like 6150 home runs this year, up from 4900 (!!!!!!!) in 2015. So he's not hitting all these HRs in the environment we've been used to, whether it's a juiced ball or what.
I don't know that it's much different from Chris Davis hitting 47 home runs in a 4900-HR environment like in 2015. It's a really strong guy hitting a bunch of HR in what is likely a career year.