Evidence against reusing a monero wallet: “If you need perfect unlinkability of your receivables, the only solution remains to use a separate seed (separate Monero wallet).” source: https://docs.g...
I don't understand why it's worth the effort to make a big deal out of the address reuse mistake. does lightning not have bolt12 and lnurl? if you reuse these, the sender will infer that it's you both times.