[davedx]

Angular didn't lose mindshare because of TypeScript, it lost mindshare because they completely changed the API of Angular, meaning a bunch of companies had to do expensive ports/complete rewrites/switch to new tech. A lot of companies are still stuck on Angular 1 for this reason.

Most Angular devs I know are happy to use TypeScript. (In fact going out on a limb, most JS devs I know).

[darkerside]

In this particular case, with a BDFL in Evan, there's probably a much higher chance of maintaining sanity between major releases. People were worried about the change to Vue 2.0, but it mostly sunsetted features that complicated the framework and doubled down on an elegant component system. Seems obvious to say, but frameworks probably get fractured in geometric proportion to the number of powerful authors working on them.