Bisq2 is still in development, Bisq 1 is legacy which I think they keep around because it has a multisig escrow-based trades which isn't implemented in 2 yet.
That's my guess for the main reason. People still use 1 for that, especially for bigger amounts and maybe for the contacts they know by user id, account age etc.
What’s the deal with Bisq v1 vs v2? Why are there two versions?
Bisq2 is still in development, Bisq 1 is legacy which I think they keep around because it has a multisig escrow-based trades which isn't implemented in 2 yet.
That's my guess for the main reason. People still use 1 for that, especially for bigger amounts and maybe for the contacts they know by user id, account age etc.