This article(written by the creator of Tachyons) helps to explain the issue: http://mrmrs.io/writing/2016/03/24/scalable-css/
Where I work, we're using it on a new project and while it definitely requires a lot of learning(and just generally understanding CSS), it's faster to debug with, easier to take care of edge cases, and the total size for our app is incredibly small.
This article(written by the creator of Tachyons) helps to explain the issue: http://mrmrs.io/writing/2016/03/24/scalable-css/
Where I work, we're using it on a new project and while it definitely requires a lot of learning(and just generally understanding CSS), it's faster to debug with, easier to take care of edge cases, and the total size for our app is incredibly small.