Neville, while rav roth might have lived contemporaneously with tav moshe, one can hardly compare the two. There just isn’t a comparison.
Learning dibros moshe is like learning the maarachos of rav akiva eiger… Rav moshe was similar to the Gaon in that he did not belong in his generation, and was sent here to hold back yeridas hadoros. I say this not only as a talmid of his talmidim, but as someone who learned his seforim on shas while learning sugyos.
So no, i do not think it was appropriate for those poskim to authorize a communal norm change which went against him and the majority of poskim, including many chasidishe poskim as well.