They don't check it NOW. One day they MIGHT be COMPELLED to. In the same way that exchanges didn't check THEN but do NOW.
And it was PREDICTABLE, because the AGONIZING LACK OF PRIVACY IN BITCOIN all but guaranteed it.
And here we are!
There is plenty of precedent for merchants, just not with bitcoin, YET. Why do you think there are legal limits that merchants can take in cash? To ensure that above a laughably small amount, they can trace it. You really think it will stop there? No, sadly it won't.
And we need tech that DISCOURAGES always-on mass-surveillance, not ENCOURAGES it. It's not just tech that's needed either, social change is needer as well.
As for lightning, reread my post (or don't), it's not that they can stop you from opening a channel, but they surely can FINE you after the fact, because the chain is TRANSPARENT.
Because all data is sitting there, forever, enforcement can be AUTOMATED.
Oh, pseudonymous sats you say, it won't affect you. Maybe. Until one day you make a small mistake. You were in a hurry. Or you needed a bit more than you thought you did. Or you used a public electrum server who just logged your IP and all your addresses and balances. Whichever way. You make a small mistake, and boom, you're rectroactively deanonymized.
Anyway, as you said, let's agree to disagree.