Hardening does not start at choosing the right tools or networks, hardening begins with gathering information to inform yourself and others in order to stay up-to-date so that you can deal with current and upcoming threats. Tools, extensions and Co. are just a workaround until someone build the right system, that starts by voting and supporting the right politicians and organizations.
As for Gnome Web being "unusable", that's quite an extraordinary claim.
Falkon, on many platforms, links Qt statically, so you stil rely on them making timely releases.
It is absolutely not a browser anybody should use.
GNOME Web has next to no UI over WebKit, so the claim is easily verified.
Hell, GNOME web hasn't even fixed it's text rendering issues yet. Text is still jagged and aliased out-of-the box. It's definitely on the cusp of "unusably bad"