It's just not a very intelligent solution. I'd rather he make a new setting for witness script sizes rather than using the existing datacarrier setting and looking for envelopes. The people who disagree think it's pointless to single out inscriptions because there are so many other ways to store data.
See the PR comments linked by others on this thread*
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-datacarriersize. Yes, you can't prevent miners from mining Inscriptions, but same applies to largerOP_RETURNs too.