If the mask is white, covers the whole head and is pointy at the top, it isn't a problem!
Seriously: things I'm seeing, aside from the stupid "breathing your own oxygen is dangerous"[1] is "I don't want to be compelled". I think it was Cowboys For Trump who said that they're happy if businesses could individually choose whether or not to require masks for patrons... and then CFT would choose to not use those businesses that do. Didn't seem funny enough to be a parody, so I'm putting it down just to confirmed stupidity/Trumpite-contrarianism.
Now, I've got some sympathy for "not wanting to be compelled". There are things (safety-related, but not in a Covid-sense[2]) that I'm not too keen on being compelling. I can see the similarities, and how someone might think my reticence in this other matter is as foolhardy (including my reasoning of "but by dealing with that big but rare risk, you introduce a slighter but more constant danger" bit).
But I can't help feeling that if there was an EO by Trump to wear a mask (red, MAGA masks; made in China; all profits, after over-generous government subsidies are applied, piped straight into the Campaign to Unelect Non-Trumpists fund) they'd only have problems with those who question its rather dubious legality/application. That is the obvious problem, and not alleged over-reach.
[1] Pretty much as it was said. Apparently it's dangerous to breath oxygen you have just breathed out (sic, sic, and sic again!), but obviously people with the virus should wear masks (in token nod to reality, before you wonder if it's dangerous to breath in your own viral cloud again). A very special opinion, that one.
[2] Maybe some things I've already said about masks look like I'm in that camp too (without checking, I know what my attitude has been and it all depends on how I voiced it in words how I might look) but I've never been a "I know my real rights, no so-called 'law' is going to make me wear a mask" person, where it conflicts with my self-assessed risk-matrix.