This was their downfall.
Angular, sexy geometric design. React, sexy nuclear design. Vue, Sexy V geometric design. Ember, a big goofy rodent looking at you lol. "But abledon, what about GOlang? they have a rodent too?" Yes but golang resides in backend land where designers and frontend visual brains are lacking, only performance matters, doesnt matter if your framework's logo is a steaming pile of poo, if its fast and easy to write concurrent code in, it will win the backend holy wars.