from speed.app "...To ensure the security and transparency, USDT-L will be 100% reserved against USDT on Ethereum."  ...And nothing else is explained. I couldn't find any information at all on the Internet about  USD-L (LN-USD i mean more correctly) 

 I checked tethers website and I see no taproot asset issuance, so you're telling me they're issuing a token, based on a token issued on ETH, what could go wrong? Lol 

At least let Tether handle that themselves

https://tether.to/en/transparency/?tab=usdt