Anyone claiming it to be "untraceable" is ignorant as the traceability is highly dependent on usage patterns and even more so on OPSEC fails via usage of honeypots as seen in the chainalysis video.

It is an interesting video and shows the basics of monero tracing which is only a good thing for the average user to be aware of. But it also demonstrates that the only reason they were able to find the guy was the amateur mistake of him using a public clearnet RPC node for broadcasting transactions with their home IP. All he had to do to avoid this would have been to use a wallet like Feather that only interacts with the blockchain via tor.

Bisq is as close as you can get to non-kyc bitcoin trading. It is up to the user to decide on what method of trade they want to engage in. Payment with gift cards, cash via mail and even face to face are all supported trading methods on bisq.

Realistically 1 confirmation is all you need. There hasn't been rollbacks in over 11 years and the previous ones happened due to btc core software bugs that are much more unlikely to happen now.