i guess in that case, it becomes as private as the exchanges used 🤔

If done correctly I would say it's even better than a coinjoin (swap p2p back to Bitcoin in different amounts and at different times)

An adversary surveilling Bitcoin wouldn't even necessarily know you left the chain. They just see your Bitcoin move to another address like normal. Coinjoins are obviously coinjoins.

Addressing my previous comment, if you're going to go that route, I do think it's better privacy-wise to have a small stash of Monero that you use directly to pay for things and just top up every once in awhile as needed. For a small amount, and short-term spending, the price performance is negligible. At those shorter time scales Monero outperforms Bitcoin all the time, so it's anyones guess. You'll probably break even if you're always doing it.

Yes, it is harder to maintain privacy that way because you create plenty of metadata that might be unique.

With FCMP++ in October the Monero side gets its most important upgrade in half a decade, that helps protect the Monero side of things even better, which is probably the reason we currently see the media campaign/state attack through qubic.

Exchanges are your weakspot.

Use something like RetoSwap or Eigenwallet (atomic swaps) over Tor that do not report your IP to authorities.

What does all that matter if they bought kYC Bitcoin to convert to monero.

You need to exchange some for Monero and just leave it because going in and out as a chain hop is not going to help you be any more private.