Perhaps if Dan Curtis Productions doesn't stamp out everything like this, then when something comes along that is truly objectionable (for whatever reason) then they will have lost their legal standing to complain.
Interesting point because, if they overlooked some and not others, it could possibly undercut their stance when they wanted to stamp out those others. The people involved in them would certainly be asking why did you allow those others to exist but not us.
One thing, though, that probably should be mentioned again is that for all intents and purposes, DCP doesn't exist. Nowadays it's simply the family/estate, Jim Pierson, and maybe a phone number - but I don't even see a phone number included in any of the listings for the production companies involved in the Depp/DS film (whereas there are phone numbers for GK Films, Infinitum Nihil, Tim Burton Productions, and Warner Bros. Pictures) - and perhaps that's due to the fact that DCP was dissolved after DC's passing. And if you note, the notice posted by the Austin group says representatives of the estate asked them to end the series.