However nothing says you actually have to use these fancy services. Everyone wants a quick loading site but the drawback of an extra 100ms are minimal. Almost everyone should be more concerned with good site design and minimizing client-side dependencies if they want good performance.
700ms vs 800ms is the difference between acceptable and a slow loading web site.
For an individual user, it doesn't matter to me if I use a website a bit less because it's a little slower. That might even be an improvement, since I was probably using the Internet too much anyway.
Or does it? Once you fix major performance, usability problems and it starts to feel fast - other efforts become kind of pointless and may even become sources of performance, usability problems themselves.