Fiat price is an illusion. If you make economic decidions based on fiat prices you are already lost in the game. I have a very long time preference. So why would I care what short and mid term prices in a dying system, that fights with all its power against it, tells me to do or not to do.

Growing as a medium of exchange also means more money will flow through Monero and the more money will at least temporarily be stored in Monero. So I don't see why Monero shouldn't grow against USD which is still the most used medium of exchange and store of value for billions of people who suffer from even weaker fiat currencies.