I have too. And the Safari version that was in the betas/tech previews.

One of the biggest arguments over the last couple of years was what to call it. A lot, lot of ideas put forth as alternatives to "masonry" which wasn't thought to be great for non-English speakers. I'm glad they finally nailed a name for it!

The other big argument was over how to activate it. Is it a grid? Is it a flexbox? Is it a brand new animal?

Now I just need to figure out the best way to implement this semantically with a polyfill for the next 30 months until it's baseline.