Nuh on Nostr: I am not sure I get the distinction... So if Liquid didn't create a sidechain and ...

I am not sure I get the distinction... So if Liquid didn't create a sidechain and instead just wrote blocks in the opreturn of a linked list of transactions on Bitcoin is that spam?

A Metaprotocol by definition is written on Bitcoin, otherwise it is a sidechain or Spacechain or a Spiderchain or whatever.

If I am trying to black list misbehaving members of a dynamic federation, it makes tons of sense removing the DA question from the equation.

Another factor is showing the demand of these advanced smart contract evident on block space fee bidding.

Are you saying anything but a hash is spam, or are you saying inconsiderate unnecessary bloated formatting would be spam?