> do you want to contribute to the Webkit dominance
There is no WebKit dominance. This is not 2012. WebKit, used in Safari et al, accounts for <20% of browser usage. The majority comes from Chrome, which uses Blink.
(Every time you conflate WebKit and Blink, you harm the cause you're ostensibly pledging yourself to.)
For me the answer will be Firefox as long as it's a thing and I have no intention of switching to any Chromium derivatives.