Also not super enthused about another browser written in C++. I skimmed some of their code and it seems pretty high quality, but still… this is going to be chock full of security bugs.
If you are going to do anything stability-based these days, Rust should be a big consideration.
There are plenty of programs out there which can end up being required for your workflow - as in, that exact program; no exceptions - and yet, have no Linux or even non-Windows version.
Not everything is a platformm-agnostic subscription-based SAAS yet, nor should that ever be the case.