USDT is set to return to $BTC this month, over a decade after its debut.

→ private USDT transfers and direct BTC swaps
→ BTC-backed loans, most data off-ledger (per CoinDesk)

I think this could deepen Bitcoin liquidity if usage follows.

Anyone use USDT on Bitcoin back in 2014?

My opinion only. Do your own research (DYOR).