A lot depends how useful the project and what profitable tools it offers. Cryptocurrency attracts by the opportunity to earn money as
https://twitter.com/CorsacV2/status/1526405278094266368 which allows to get 9% BUSD ?? rewards with utilities, which allows to attract community!
The rewards in BUSD will attract more attention to the coin, but it is very important to create the project that is really necessary for people, that is actively developing and in demand.
During the fall of the market the demand in stablecoins increase because more and more people buy stablecoins not to lose money on the fall of the market.
Stablecoins are used as a safe haven.
I don't know if you remember but when BTC had its first bullish trend which was in 2017, which reached almost $20k, after this they blamed bitfinex as the one responsible for issuing a lot of tether and making this price rise possible with the " impression of tethers "uncontrolled and so much so that they were later prosecuted and they had to pay a large sum of money, which for them obviously was not much but for any person or common trader it is almost impossible, now many stablecoins are handled, but still the one that is most famous is still tether and something that I have seen more is busd.