Shinya's playing style at this point is comfortable but it works for what they're doing as a unit. And i cant say its boring imo. The drums is largely why my favorite Dir songs are my fav Dir songs.
We can't sit here and claim he didn't kill it on Uroko, Rinkaku, Ningen, Grief, Different Since ,etc. And depending on the song and how long they've been playing it or haven't played it, he DOES make some clear changes from the OG versions.
And in regards to the heavy parts in the longer songs, Kaoru literally repackages the same riff from Vinushka. You cant blame him for doing his usual thing in those situations. Hazuki (Lynch.) and Ruki (the GazettE) are guilty of the same thing in almost every album and their drummers are just responding in kind as well. But again, it works for what they do.
As long as he ain't faking like he can play certain things (like he did in DSS), I'm honestly ok.