These all apply here in Sweden. The information from the equivalent of those W2s is all available to me directly through the tax authority's portal though, so when I filed my taxes the other day I just logged in, checked the numbers looked sane, pressed a button, and the process was done.

It took about 5 minutes. It would have been more like 30 seconds if my Swedish was a bit better.

There's nothing we're doing here that you couldn't do in the US, you just don't.