I actually happen to think it was a fairly accurate description. He clearly was implying the usage of single use ordnance in competitive play, and even if he was referring to the wider game in a casual sense in my own experience at least MF has not at all had a “substantial” impact.
In fact I would say that from the results I have seen as well as anecdotal evidence MF has had an inconsequential impact and quite fairly described as a failed remedy for single use ordnance.
I never shut up about Hot Shot Blaster + MF, so some people use that... but outside Flechettes you won't see much use of MF.