I'd guess it's just the sad-but-inevitable result of Firefox market share dropping so far. Remember back when every website would tell you your browser was "out

I'd guess it's just the sad-but-inevitable result of Firefox market share dropping so far. Remember back when every website would tell you your browser was "out of date" unless your user-agent matched IE6's? For everyone not on Firefox, this is one reason why we kept saying a browser monoculture is bad.