bitcoin privacy basically died earlier this year when the samourai devs were arrested and wasabi shut down their coordinator. i think people that need privacy saw monero as the best (well, better) alternative. if you look at stats from coincards for example, monero makes up the largest percentage of their volume now. also, binance who (probably) ran the largest fractional reserve system for monero, delisted it a few months ago, so we aren't as affected by their market manipulation anymore.