Robosats do its best to preserve the privacy of users, if you avoid re-using robots you can basically leave no traces of your trade on Robosats.
There are some payment methods that are absolutely private such as F2F, but as any other option it all depends on the liquidity.
But still, people have the preference of using these other non-private options for trading, which for some people seems to be not ideal, but not absolutely terrible.
The payment method is a free text so people can use even chickens for trade. What we can't do, for sure, is to ban payment methods. It's reposability of each user to DYOR and accept the counterparts of the method they choose to trade.
Taking into consideration Robosats is not responsible of the fiat side (where the privacy is lost), what are our options?