That project use different GitHub account, so no wonder i didn't know about it. While the UI application seems to be user-friendly, the installation process[1] would filter many Bitcoiner.
[1]
https://jamdocs.org/software/installation/Why on earth would you use a web interface and expose your HTTP port in order to do a coinjoin?
Not only does it come with the usual risks of bots infiltrating your network with malicious packets and spam, but it also allows them to potentially use a vulnerability to steal crypto located inside the JoinMarket wallet.
That's good point. While i don't play to try Jam for now, it could prevented by using firewall with advance rule.
There is nothing wrong with the Qt interface of JoinMarket.
It depends on what we count as wrong. Although it can't denied the UI doesn't look as good as many modern application or website.