It's being blocked by filename as there were a number of cases of it crashing & users not updating to newer builds of it that fixed it iirc or there was conflict between the 2 plug-ins (mine & theirs) being enabled at the same time. So to avoid me being spammed / getting complaints when the issue was not on my side, it was added to the block list.
As I'm offering the feature natively (was
part of WACUP before I was ever aware of the other plug-in) & it does everything afaict that plug-in was doing plus more (i.e. it has albumart support along with none of the faff in having to setup your own app id, etc), not allowing the other plug-in by filename in this instance doesn't seem like a bad thing to be doing.
-dro