Honestly, a streaming service should buy the rights to this and put out an Orgy of the Dead variety show every year.
It's a nudie cutie where women take turns dancing topless and a couple has to watch for some reason. The dialogue between the hosts and the monster characters could be perfect banter and a Greek chorus, but it just goes nowhere. It's so captivatingly bad it could easily make your annual Halloween watch list.
I could see a modern version working so well that's full of drag, burlesque, and whatever other weird freaky stuff you can come up with.
The 1965 version is camp, it needs to go all out gay.
You can probably find it on YouTube or other means, I got reminded about Orgy of the Dead from a Mubi email, it may not be available in your country on there though.
I think they still got shown in a cinema because back then there was no other way to watch a movie. I remember listening to Eli Roth on a podcast saying the quality of slashers really dipped in the 80s because of direct to VHS.
Before then, studios had to consider schlock real movies because they'd get shown in cinemas and the people making the movie tried to do their best with the resources they had. Perceptions changed and budgets were slashed with vhs and you had so fewer resources to work with