lopp isn't involved with the development of bitcoin core at all-- beyond being a bitcoin using member of the public that has sometimes commented on things that interest him.

Bitcoin developers overwhelming do not like NFTs/embedded shitcoins, or similar.

Major miners already disabled the OP_RETURN limits, so maintaining them for relay by default just causes harm without a benefit.

Also, some people who would have otherwise used them are instead using fakepubkey outputs which are infinitely worse.  Nothing new can be embedded that can't be done now because 1. miners already bypassed, and 2. can be embedded in the witness instead of the outputs.

So the whole thing really is a nothing burger and is just acting as a proxy for parties who are pro-censorship to try to enlist support on the basis of NFT bullshit sucking.  Problem is that that isn't a genuine division, eveyone in these discussions thinks NFT bullshit sucks.  It's just that we already have capacity limits and fees to manage it which clearly do work if not fast enough for everyone's preference--- and degrading the central properties that make Bitcoin worthwhile isn't an acceptable risk,  particularly vs nothing burger op_return.