How would it blind lntxbot? If users are still using the bot to send/receive lightning, then it can see what they're doing. I guess i they can exchange their lntxbot ecash-sats p2p over telegram, then lntxbot won't see those transfers. What % of lntxbot payments are to other lntxbot users? If its a large amount, then something like cashu could be cool. If most users are using lntxbot to interact with the broader lightning ecosystem, then I don't know what it would get you.