Yeah, somehow we've lost lessons learned. Used to be, you knew it would take forever to display all of something, so you displayed what you could as you had time to render it. For instance a long report. As you render each page you would make that available to display instead of waiting for the entire 200 page report to render first. "Feeling" fast was often as good as "being" fast.

No we still do that in web dev. This one was just a classic example of design by committee. Classic microslop