Yeah, it also makes 50 less horsepower (but more torque!) than the s2000 engines and that power has to come from somewhere. Ironically, the cars with the F20C tend to do a little better than the cars with the F22C, probably down to the gear ratios being shorter for the latter cars (in the US at least). That said, the difference in engines is probably not as relevant as the difference in weight. It's crazy how light the Elise is.
ND Miatas are getting there. The new engine is 180 bhp and revs to 7500 (i think?), combined with its light weight that puts it at a similar performance level to the S2000. Obviously i'm not rushing to trade mine in any time soon but the fact that Mazda is still willing (and able) to make a car like that is really impressive imo.
I would say it's more like: "How can I do X?" "Here are some reasons you can't do Y."
The answers should have been "Here are some reasons doing X is hard, but here's an attempt at it anyway and also some more robust alternatives to doing X." That would have been an excellent answer. (If you go down far enough you do start to see things like this but they're hindered by people still responding that you can't do Y or downvoting because they don't understand what's happening.)