I did not write off HTTP2, I just said that it is not has interesting as marketed. It's great for some usecase like tiled maps for instance. Not worth the trouble for other usecase. That's all. Akamaï already demonstrated so, not long ago.

I feel like it simplifies workflow, site design etc; serving your content from several domains is a hack and a half. I can see your point for non-greenfield dev, can't say there is a large amount of motivation to switch it out (aside from new toys!!!).