I read something the other day that Bauer and Cole both have had their spin rates climb to insane levels the last few years, coinciding with their dominant stats. deGrom's have stayed fairly level, and in fact I believe his spin rate has dropped a little this year.
In an article in (I think?) the Athletic, they documented how spider tack added around 500 RPMs to pitchers' spin rates almost immediately, and even one of the writers for their website throwing 49 MPH fastballs gained 500 RPMs after applying spider tack. I get that pitchers are going to use something to help with grip, and I don't have a problem with a little something like rosin, but this stuff is definitely over the line.