If you use Ublock Origin, you can enable the "annoyances" filter and the Twitter login overlay is removed.

Thanks - had no idea about that. Enabling it now.

With Twitter, I find you can click the log in button, and then there is an X to dismiss the modal with, which then lets you read the page. (And this is absolutely annoying, terrible UX, and I wish to God people would stop putting things on Twitter.)

The existence of these backdoors is a bad excuse these teams use to justify user-hostile UX. I had no idea this was possible, so for me this might as well have not existed. I simply skipped reading twitter threads when I was on a device I wasn't logged in on.

Reddit also, if it is deemed sensitive.

Sometimes I click a twitter link on a devices I don't want to login to (work machine). I ended up creating a second account for this exact reason, so annoying.

if you are using firefox on the desktop you can prevent all cookies for the site than that goes away. Free the browse with no popup for login