Well, yes. Thank you.

I seem to have tacitly assumed that on-chain transactions are absolutely safe. Maybe in reality, but not in theory.

I don't think transactions via Lightning have the same security risks as traditional on-chain, so there's no direct comparison.

After the Lightning Network is established, the number of transactions before uploading to the chain for confirmation cannot be estimated.

And staring at the maximum transaction throughput that Bitcoin can support doesn't seem to make much sense.
I heard that Bitcoin is positioned as digital gold......

PS: Forgive my English need to rely on Google translation, I was not very accurate when I checked the words.