Additionally, DY, you’re grossly misapplying Rav Moshe in a manner Rav Moshe never indicated, implied or said. Rav Moshe mattired a wig that looks like real hair or even is actually using real hair (as opposed to synthetic hair, which was what must sheitels used then.)
But Rav Moshe in no shape, manner or form implied, indicated or stated that a wig that doesn’t look like the person is wearing any head covering, and rather appears bareheaded, is permissible. That is a completely different creation/metzius/product than the natural hair wig Rav Moshe ruled upon. The wigs he is referring to can be seen as a wig, not appearing as bareheaded, by the public.