I installed "uBlock Origin" and still get a modal login interruption when I scroll down on Twitter.

At least this will take a bit of load off my pihole :)

Does uBlock Origin enable you to read threads?

Opening a thread and scrolling down results in a login prompt being shown; but simply removing the login prompt still doesn't let me load further tweets from that thread, at least not when I remove the login prompt manually (via web inspector).

  twitter.com###layers > .r-1p0dtai
  twitter.com###layers > .r-ipm5af
  twitter.com##html:style(overflow:visible !important)

you can delete #layers altogether but you won't be able to bring up image modals, etc.

Upvoted because this answered my confusion about the initial question. I did not see any login prompts pop up where they need not be. :)

Yeah, a lot of annoyances just go away when you use uBlock Origin, and you tend to forget what the web is really like without it.

The default rules don't do it for me. Does it need some custom rules?

The annoyances lists only partially work for me. The following rules seem to catch everything:

    twitter.com##div[role=group]:has(div:has-text(/See more Tweets from/))
    twitter.com##div[role=group]:has(div:has-text(/See what’s happening/))
    twitter.com##html:style(overflow: visible !important)

Thanks for this, it fixed it but ofc twitter will soon find out and break it again. Even though, they know majority of internet users don't user uBlock Origin. I feel they'd still come after the few that do :/

It doesn't need custom rules, but there are a variety of filter sets available on the "Filter lists" configuration page which may not be enabled by default. (Try enabling the filters under the "Annoyances" category.)

But first, make sure all the filters are updated (click the "Update Now" button on the filters page if it's enabled).

This filter fixes the login wall. I don't expect it to work forever, but it works perfectly for now: twitter.com##+js(cookie-remover, guest_id)

Oh... i have a friend who actually passes twitter links around and I was wondering why I never see a login prompt from his stuff. uBlock Origin must be it.