Florian Bruhin (AKA the-compiler, the author of qutebrowser) is one of the kindest and most dedicated open-source maintainers I've ever had the pleasure to interact with.

I've used qutebrowser extensively in the past, and reported a few bugs, each of which has been met with interest and engagement. Some of them even uncovered bugs in the upstream software (e.g. QtWebEngine) which were reported there.

I eventually stopped using it when YouTube ads became too invasive, and went back to Firefox + Vimium + uBlockOrigin. I sometimes miss the programmibility of qutebrowser, but Vimium at least gives me the basic Vim-like browsing features.