Windows NT on 600MHz machine opens apps instantly. What happened?

A lot of people are bringing up Wirth's law or other things, but I want to get more specific.

Has anyone else noticed how bad sign-on redirect flows have gotten in the past ~5 years?

It used to be you clicked sign in, and then you were redirected to a login page. Now I typically see my browser go through 4+ redirects, stuck at a white screen for 10-60 seconds.

I'm a systems C++ developer and I know nothing about webdev. Can someone _please_ fill me in on what's going on here and how every single website has this new slowness?

A lot of sites now don't even a "sign in" now. You only have a large "sign up" button, which you have to click, and then in very small text at the bottom of the sign up screen find the link for "already have an account?"

Don't you see? All that matters is those tasty conversions. They want your email. They want your conversion. What's that? You've converted already and want to login? Sorry, we've got more conversions to drive, can't be bothered.

I wish sites only wanted email. Mostly they want to integrate with Google, Facebook and require a phone number.

I'm waiting for the day when we see an article about some government tax or bill-pay portal that only works with Facebook and Google login, no email.