I care because it's a convention. Without knowing too much about Angular 2, I know that it's got major breaking changes compared to Angular 1. Likewise, I kno

I care because it's a convention. Without knowing too much about Angular 2, I know that it's got major breaking changes compared to Angular 1. Likewise, I know that a 1.15.2 should upgrade from a 1.15.1 fairly trivially, whereas a 1.16.0 might take a little more consideration. With all that said, the responses to my question are very reasonable, such as "people I know and respect have used it and stated sane upgrades historically." In the absence of this piece of tech in my own social circle, SemVer is a convention that Facebook will have to live up to. 6 months to a year after Facebook switches to it, I can research how reasonable they are with introducing breaking changes and supporting old, stable versions. I believe that more people will be vocal about a major breaking change post 1.0 than pre-1.0.