No, pedantic would be noting this was a feature promised during the preorder campaign. We have Doug Castro, on record, stating that plugin compatibility was trivial to implement and the main issue was converting patches (!!!). And, somewhere along the line, that turned into "no, this is actually a lot of work, we need to rewrite all plugins in the process."
Truth is, they marketed and sold the QC on a feature they didn't even have a proof of concept for at the time.
And yeah, sure, it's gotten... better since. 5 years in and some stuff works, some don't, yet NDSP keeps releasing new plugins without PCOM - which is incredible.