You didn’t post “information”, you posted a patently improbably theory.
Paint Shop Pro is NOT accessing Avast folders. Paint Shop Pro has been installed for MANY YEARS before Avast was ever on this computer. Paint Shop Pro is not aware of or interested in Avast. Similarly, Avast Self-Protect has stopped Notepad++ from working. Notepad++ was around long before Avast.
It’s already been acknowledged here that the issue is with the Explorer context menus. It has nothing to do with Paint Shop Pro or Notepad++ “accessing Avast folders”.