What's going on with the Mandela Effect? Is the name itself an effect? Mandala Effect?

Is it mass formation? Subliminal programming? Mass "misremembering"? Glitches in reality? Parallel realities blending? Time and space manipulation?

It seems the longer the discussion goes on the more comes up (as a greater diversity of people learn about the effect). I remember a few years ago when first reading about it there were really only maybe 5-10 really solid ones. Now there are dozens talked about by tons of people.

What's going on here?