I think there's nothing new about this FUD, And it was already discussed many times, that's why let it vanish naturally, by the way, the concern is about the Bitcoin price impact if the USDT face scrutiny from the regulators and find out that it was not totally backed with fiat (dollar), IMO there's nothing serious about that fear because Bitcoin is not pegged on any currency or assets, so why bothering with it if the USDT operation will be banned or ceased, I believe there's a lot of stable coins out there to use. thats why it will not affect the Bitcoin price for that particular reason.