This has gotten some attention, especially about a week ago, but I really hope more people will continue to try it and, if interested, support it. It is Firefox, but heavily modified to please a different audience that prefers a slightly different UI than Firefox. It has some of the appeal of Arc, Vivaldi, and the Sidebery extension.
In my view, it is very promising, and all competition in this space is good. Here it is on Github, also.
Floorp didn’t impress me either, but I’m not sure yet that I can 100% replace my awesome Arc workflow. The “Air Traffic Control” with profile / space combinations is spectacular. But I’ll find a way to make it work, because I really prefer FOSS when possible.