It happened before, with the transition from Mozilla Suite to Firefox. And let's be honest: XUL was just lipstick on the pig that is cross-platform development. HTML/CSS/JS are now fast enough to look like a slightly better pig, so here we go.
Also, there's a generational shift underway. You and me could find crazy that people would openly choose to use IDEs built on HTML/CSS/JS, but that's what a lot of young folks are doing (Atom, VSCode etc etc). That's their world, that's what they like. An entire generation now exists, who learnt to code from web scripting rather than C or BASIC. They have taken over. It's just how it is.
(this said, I agree that donating to Mozilla feels a bit silly, looking at how much money they make from commercial agreements. It's like donating to Ubuntu or RedHat.)
Also, there's a generational shift underway. You and me could find crazy that people would openly choose to use IDEs built on HTML/CSS/JS, but that's what a lot of young folks are doing (Atom, VSCode etc etc). That's their world, that's what they like. An entire generation now exists, who learnt to code from web scripting rather than C or BASIC. They have taken over. It's just how it is.
(this said, I agree that donating to Mozilla feels a bit silly, looking at how much money they make from commercial agreements. It's like donating to Ubuntu or RedHat.)