[brryant]

Yea, it's a pretty transformational layout paradigm for the web. The crazy thing is less than 1% of websites use it: https://twitter.com/ebidel/status/1034874571747291136?s=19

[a_humean]

#1 reason I and likely most people don't use it: IE11's poor support.

Once IE dies or I have a job where I don't have to care about IE11 so much, then I'm all in.