What he says is partly true. The volatility is not good however this is why stable coins exist. Sure people in El Salvador are happy when BTC had a crazy rally since it became legal tender however they wouldn’t be too happy if it went the other way.

Imagine getting paid to Do a job in BTC. Then 1 month later it loses 20% value, then the month after another 20%. This obviously is way too volatile for most people, especially those that depend on their pay check. Hence why stable coins are important.