[awjr]

The designer seems to be harking back to a time when pretty much the only browser was one on a laptop and you could reliably assume 764pixel width.

These days, you have no idea what is browsing your website and more than likely it is somebody on a phone. So priorities change.

Content makers want their message in front of as many people as possible. To achieve this, you make it work on a small screen. This brings good design constraints and stops design for the sake of design.