My other problem with N95 fitting argument (as I've seen it made during the early days of the pandemic) is that there is a level that is "good enough" for most people.

Yes, if you want absolute certainty in a highly infectious environment like the hospital, when you're doing bronchoscopies or taking care of COVID patients, you'd want to get the fit absolutely perfect (especially if it takes key resources like Nurses / docs out of commission for several weeks).

But if you're just worried about everyday scenarios like sharing an elevator in my apartment building or going to a grocery store where people still seem to turn up with out masks (or worse, pretend bandanas are masks) or get on public transit, then getting some protection is good enough.