Actually it makes a lot of sense. For an electron based browser the vast bulk of it is in the HTML/CSS/JS engine just like normal, but instead of doing the higher level code and UI chrome in C++, you just use the same language and facilities which the engine itself already provides.
Brave is actually really good from my perspective. I use it as my main mobile browser. They're looking to add support for the p2p `dat://` protocol this year as well!
