That's correct. On the other hand, I see many people sheepishly accepting slow page loads and overall unresponsiveness of today's web apps because - apart from

That's correct. On the other hand, I see many people sheepishly accepting slow page loads and overall unresponsiveness of today's web apps because - apart from a few slim ones - the majority seems to be equally sluggish, loading tons of JS, webfonts (before the page gets loaded!) and what have you. Many people somehow got convinced that it has to be that way.