To be clearer, I most recommend: BTC -> XMR -> Spend XMR

If for whatever you don't want to do the above: BTC -> coinjoin -> Spend BTC

My least recommended is: BTC -> XMR -> BTC because there are so many caveats. Even more potential pitfalls than just coinjoining because you are additionally involving a centralized third party, the exchange, with a full view into your swaps.

If you are just hodling, and bought KYC free, none of this is really necessary imo until you decide to move/ start spending your BTC.