If not, your only way of fighting back is using Firefox and Safari, so that people still make websites that work in something else than Chrome and Google's monopoly isn't complete.
Then I have no way of fighting back, because I don't use Apple machines and Firefox no longer meets my needs and I have significant performance problems with it.
Over years I've found it really useful to accurately test web-page developments for Apple device compatibility on Linux distros without needing an Apple device or emulator.
That is not to imply the surrounding browser 'chrome' and UI is equivalent - but rendering certainly is close enough that most of the time pixel-accurate comparisons are valid.
Even Debian keeps up-to-date with latest webkit upstream. E.g. right now (Jul 5th 2023) Debian's libwebkit2gtk 2.40.2-1~deb12u1 (on Debian 12 Bookworm) shows this Changelog:
webkit2gtk (2.40.2-1~deb12u1) bookworm-security; urgency=medium
* Rebuild for bookworm-security.
* The WebKitGTK security advisory WSA-2023-0004 lists the following
security fixes in the latest versions of WebKitGTK:
- CVE-2023-28204 and CVE-2023-32373 (fixed in 2.40.2).
-- Alberto Garcia <berto@igalia.com> Wed, 14 Jun 2023 11:00:05 +0200
webkit2gtk (2.40.2-1) unstable; urgency=high
* New upstream release.
* debian/rules:
- Pass -VNone to dh_makeshlibs for javascriptcore to keep the behavior
of the debhelper compat level 11 and earlier.
-- Alberto Garcia <berto@igalia.com> Tue, 30 May 2023 10:19:01 +0200