The main idea “ lest create a new browser because chromium and Firefox have bad reputation in privacy “ is fine, but looking deeper into the project feels more like a monetary opportunity than a real interesting project in this times of privacy fear (VPNs already did billions). And there are concerns with this one, related to the license. The whole things has much propaganda. More of pay for privacy shit. I really hope developers time are not wasted or used with a fake idea. Like happened so many times.
The project received some substantial funding recently, so I think I can see where this fear is coming from. However, I also think that a lot of what you say is not true.
The project wasn't started "because chromium and Firefox have bad reputation" and the website doesn't even mention either of them or privacy at all. It was the browser of serenityOS, a from-scratch OS created many years ago by Andreas Kling to help himself overcome drug addiction. The browser part simply got so much traction that he recently decided top split the projects.
The project uses the BSD 2-Clause license which is a very common, OSI approved open source license, so I'm not sure what concerns you have in this regard.
Furthermore, I don't see where you got the "pay for privacy" claim. While they do not state whether the browser will require a license, I would be very surprised if it did, given the projects history.
Lastly, a lot of open source projects post monthly updates online and Andreas has done so four many years now. Calling it "propaganda" seems unnecessary and inflammatory.
Please do some research before making big claims like this.