I'm either too smart, too stupid or too something else, but I really, really don't see myself participating in these "Artificial Scarcity Activity Modalities" (SCAMs)
I made an NFT collection and they can definitely be changed :)
The only part that can't be changed is the portion written on the blockchain which is, for most collections, only the token number.
So yeah, I can't change the fact that token #450 was minted, but I can change the image, name, description and metadata (e.g. traits) associated to it.