I guess my point was, that as FamilySearch clearly state their support for recent versions of most commonly used browsers, it is perhaps misleading to suggest that switching to Chrome is the best solution.
It is, of course, standard procedure to try an alternative browser if a website declines to work in your preferred browser. But even if the site works OK in a different browser, that doesn't mean you have to ditch your preferred browser. It may be that a few tweaks in the settings, such as enabling cookies for the site, or disabling an add-on will sort things.
If people want to switch to Chrome, that's fine. But I wouldn't want to suggest to anyone that they would be better off using my preferred browser, as we all like different things.