I feel you. It's definitely a tradeoff. SPAs do tend to be buggier but I can't deny that, when done right, they also tend to be better.

Unfortunately, there's _more_ people, building _more_ stuff, so there's _more_ terrible stuff out there. The amount of new apps (and new developers, especially ones with quite limited skills) is immense compared to something like ten years ago. This means that there's just more room for things to be poorly-built.