Sure, people should give it a go (especially if the value of their time is low enough that spending some of it on trying to use Firefox is not problematic even if there is a substantial chance of encountering serious problems). It’s just that they should be keenly aware that of what they’re doing when they give Firefox a go, and they should have Chrome (or similar) ready to go, so that they can switch at a moment’s notice if their Firefox experience goes poorly.
Sure, people should give it a go (especially if the value of their time is low enough that spending some of it on trying to use Firefox is not problematic even if there is a substantial chance of encountering serious problems). It’s just that they should be keenly aware that of what they’re doing when they give Firefox a go, and they should have Chrome (or similar) ready to go, so that they can switch at a moment’s notice if their Firefox experience goes poorly.