How does this compare to QuteBrowser?

We have software marketed as a web browser, written in typescript running on a web browser...we've gone too far.

This seems like it's mostly an extension similar to vimium, but you have to rebuild firefox to use it.

Edit: the build finished, typing from Glade. It is indeed mostly just an extension on top of firefox, but slightly better integrated, e.g. normal/insert modes in text areas work well. Doesn't seem to work with EDITOR=hx (maybe it doesn't know that it has to run it in terminal?). The integrated scripting engine is neat but I already have declaratively configured tampermonkey in my firefox. Oh, also, there are a couple bugs indeed.

For some reason I was expecting more, I don't know what exactly.

trying it out now on NixOS. it's buggy. VERY buggy just a word of warning but it is VERY early alpha. Can't really do much with it right. Font issues, command window not popping up, etc. Promising though. would love to have something like qutebrowser but with decent ad blocking.