> Most SPAs are anything but reliable. If you talk to most non programmers, they hate computers and software and think pretty much all software sucks.

Expanding on this, I had a Dell XPS 9550 running Linux until the M1 Macbook came out. The XPS was a pretty powerful machine when I first bought it, but as always happens, hardware requirements for software increased while my hardware stayed static.

And the software whose requirements increased: websites, and specifically SPA's. It was absolutely noticeable visiting many (but not all) SPA's, with Jira being the worst offender, just how slow those websites are. It doesn't have to be much slower to just grind at you, and for you to want to finish and leave that site as quickly as possible.

Now I have a much faster desktop with a 5950x processor, and a Macbook Air M1 for when I'm moving around. I don't notice the website slowness anymore (except on reddit perhaps), and it isn't really an issue for me anymore. But I'm a software developer among other things, and I spend a lot of time on computers, so I get good hardware. We who are developers are likely an exception to the general population who will be experiencing the web as I did on my XPS, or perhaps even worse.