But developers need to support the browsers their audience choose to use, and as sad as it is, Firefox simply doesn’t have the market share today that it once d

But developers need to support the browsers their audience choose to use, and as sad as it is, Firefox simply doesn’t have the market share today that it once did. Even if my amazing new web app runs perfectly in Firefox ESR, that isn’t going to help me if Chrome pushes out an update that breaks something for half my users.