For all you Pacifist fans:
Pacifist 4.0, "…re-written from the ground up in Swift 5" is available for download and at a substantial discount for those who bought previous versions.
Unless you've found something that I didn't find after considerable searching, there's no previous user discount. Pacifist 4 is a 2nd time around, brand new $20 purchase for all...a full price paid upgrade, but terribly obscurely presented.
I opened up a Big Sur installer in Pacifist 4, and it looked to me as if it's able to deal with the boot image, but I couldn't do a full check, because I'm running Catalina.