I remember LocalBitcoins, a site I had accessed a few years ago, but asked for identification in order to trade. The services you've mentioned are not that well-known here, and not as direct as exchanges. Bisq on the other hand, is similar to DeFi exchanges, which certainly come in handy and could be used as an alternative indeed.
Most of my funds are in BSC, via the metamask wallet, thus, I certainly get your point, nor am I planning to move them anytime soon. However, when withdrawing to fiat, the most convenient is exchanges, and probably the most direct.
Bisq just still remains the most decentralized exchange, just that alerts can be managed on mobile app but the trades is through using personal computer using open-source software. This may not be convenient and the trading volume may not be as high as on centralized exchanges, but people that wants privacy still prefer it to centralized exchanges that demand for KYC.
Alternatively, you can still try
Hodlhodl or
Localcryptos. Localcryptos still have considerable high liquidity, try it before complaining that using centralized exchanges are more direct. There is nothing more direct than to send or receive bitcoin directly on an address generated by your noncustododial wallet rather than using centralized exchanges which you do not have the keys, you will still need to transfer the coins to noncustodial wallet to have full control over the coins.
Decentralized exchanges like Bisq is not the same as those altcoin exchanges that are altcoin based because you can not exchange to fiat on the altcoin based exchanges.
I was never in the belief that cryptocurrencies were anonymous, and I’m surprised people are still thinking in that direction. Anonymity and privacy are not something that can be achieved nowadays without much effort and hassle.
But you still meant that privacy and anonymity are still both possible, but just that it is not easy to maintain but some people are still having privacy while using bitcoin with the use of full client wallet like Bitcoin Core using Tor connection, some people have some transactions that are also anonymous as they use Tor on SPV noncustododial wallet for making transactions while not connecting with their IP address at all but only using Tor.
You are not wrong because many people have lost their privacy before they even know what privacy his while making use of bitcoin. But still if they know already, they can start being private and/or anonymize some transactions of their choice.