I feel like in most videos, Bukovac misses the crucial context.
I can't tell if he's saying "Fender Mustang doesn't sound as good as tube amps", which I would agree, or if he's saying "all modelers don't sound as good as tube amps" because he does not make that distinction but makes more of a blanket statement.
He says "This guy did a shootout between tube amp and modelers, but used one of those Ox Box things instead of a mic, which to me defeats the point of using a tube amp". For the comparison to be valid, you'd want to minimize variables. You don't want "this Fender amp miced in the room" vs "some Fender cab sim in the modeler" because that's already more variables.
If he wanted this scenario, the best way to do it would be making an IR of that miced Fender cab, and using it in all the modelers.
I'd agree with him if he said something like "My playing experience is better when I can hear myself through the real guitar cab in the room, and that speaker is then miced" but again I feel like there's some important context missing and I'm entirely guessing if that's what he means, or if he's simply saying that the real miced signal will always sound better.
My experience with no volume restriction mics vs IRs is the same as lower volume, no major difference. I'll need to make some comparison clips next time I get the change to do this.