Sure, I am not against OP_RETURN having no technical limit. What I am against is making the field unpruneable. If I want a limit on MY mempool's acceptance I don't want to have to fork the software. That's ridiculous. Also, keep the default where it is and let the spammers increase their OP_RETURN data carrier limit. That is more than fair. Spammers set their data carrier limits and do their worst. Others who disagree can run their filters and see who is more prevalent on the network.