Stable coins are not hedging or long-term investment instruments. It is rather a tool for fixing the profit obtained in exchange transactions. Therefore, they are very actively involved in the turnover of traders.
Any person who was engaged in trading on exchanges understands what stable coins are and why they are needed. This is a fairly popular financial instrument.
It is popular, but everyone decides what kind of token to buy, maybe someone likes instability for making good money on it, there are a lot of options here.