Also find myself having a pretty severe allergic reaction to websites (Gem is a recent example) roadblocking anything but Chrome (seemingly both because of their web app literally not functioning properly in Safari, and their browser extension being Chrome-only):
a) essentially forcing me to use Chrome for one task, whilst deal with password management in two places, etc., and
b) giving me the nagging worry that the design of the app or extension might contravene some non-technical standard imposed by Apple which Google does not honor…