Can we please stop saying this about the Pro Controller? It's been beat to death in this thread that the Pro Controller is this shining beacon of non-drifting bliss... it isn't true. I have one and it drifts. Mostly every Splatoon player or Smash player who uses the Pro has drifting on theirs, too, and there are loads of videos and tutorials around of how to fix it or whatever, just like there are for the Joy-Con. It's a Switch issue, not a Joy-Con one.
man oh man, you’re always so feisty.
I'll take that as a compliment.