That's definitely the best argument I've seen, at least it makes a case for a narrow rule against 'retaliation' against officers of the court. Banning 'outspoken critics' though still seems fine to me.

And such a regulation definitely doesn't need to have anything to do with facial recognition - one could imagine such a problematic retaliation being carried out by tons of methods both easy and labor-intensive. A bar could card all patrons and manually check the names (even not even collecting or storing any info) against a list of targeted persons kept behind the bar. An airline could refuse to ticket you if your firm sued them, etc.