The issue is that, it doesn't just depend on the game being RPG MAKER MV or MZ but mainly the plugin used. if one plugin has an issue with MAC (like authorizations issues to use certain folders for example) then the game will crash and we have very little room to fix that.

That's also probably why some RPG MAKER MV games run pretty well on Mac and other not.

The developer involved is planning or has already made extensive changes on the work-in-progress that his modifications might not react well to what is basically tampering. Those games you mentioned look more like they're made with only the capabilities of the base MV, and don't seem to have access to a developer who is extending MV to get more capabilities.

There's also this part of Big Sur's known issues related to the kernel where they moved the system libraries (this includes the graphics driver involved in drawing stuff) into this one big blog and you'll need to use the newly-introduced dynamic library loader to get them. MV wouldn't know how to use it because it was developed way before, and it's something only the MV team will only be able to do while almost certainly breaking everything else along the way. And experience has taught me that this issue behaves differently when it involves a Mac that has been upgraded to Big Sur and up, compared to a Mac that has Big Sur and up installed by default.