What is it then? New github homepage is extremely bad at a reduced size as well.

below 1012 pixels and they remove search and anything in navigation for a hamburger button, where there is clearly still enough room for these elements.

at 768 pixels they remove the new repository button.

They should be focusing on their desktop experience. Sure their mobile experience is still fucked, but you'll find that at least 90% of people using github every day are form a PC. Who programs from their phone?

The fucking navigation menu on a browser that big is pretty inexcusable. It's a step back from any coherent design