I'm brand new to PLAP and the forum - another Cubase user (8 Pro still).
It's crossed my mind to get PT and/or S1 but as I've heard someone else say "what goes does learning a second language do you if you don't have anyone to talk to in it?" Or "why learn to play guitar left handed if you can already play right?"
I've done the free Coursera course on Ableton and I can see why people making electronic music would consider a platform like that.
As for "blacklisted" plugins, I've never had a single problem with any (and I have a lot of Waves and iZotope plus dozens of freebies) except RIN-M while it was in Beta. Seems perfectly fine now though.