Yes, confirmed, everything is being recorded on the Monero Blockchain so is potentially vulnerable to future threats.
Lightning has no blockchain, you must actively gather data. Ephemerality is great. And as long as no one is actively collecting that data (big caveat!) it will be safe from future threats. But it has weaker privacy garuntees and is more vulnerable *right now* than Monero.
(Who knows when Moneros past data will be broken? I could easily be dead by the time that happens. Monero is also not static, it continually improves privacy i.e. Seraphis full membership proofs)
Agree? Anything to change, add, remove?