Alternatively, replace twitter.com in the URL with nitter.net. It points to an alternative client.

What? https://nitter.net/quinetweet/status/1309951041321013248 doesn’t ask for credentials and AFAIK there’s no place to enter them on the whole site, unless you type them into the search bar.

It still shows up as "tweet unavailable" for me, though, in this link

What you're seeing is an available tweet with an embedded tweet that is kept from being displayed. Because the embedded tweet is itself, it is handled by showing the same UI as any embedded tweet that is not available.

Right, but my point is the behavior is the same on Twitter and nitter

"tweet unavailable" is a different error from the "This is not available to you" message. Got that message earlier today when I tried to open a different linked tweet. Changing to nitter fixed it for me.

Ah, I get tweet unavailable from both, thus my confusion.

If it's the same bug I frequently see, manually refreshing the page by hitting enter in the address bar always fixes it for me.

You were right, it worked this time.

Nope, I'm assuming that's someone on Twitter noticing what he did and hiding it.

It's definitely a common Twitter bug.

"This is not available to you." is something different from "This Tweet is unavailable."

I have "This Tweet is unavailable."

Yes, that is a completely different thing. "This is not available to you." comes up in place of the content in the Twitter UI.

Or the software just doesn't handle it.

Why the speculation from you and the parent? You can literally click on the Tweet and see that it works fine.

When I click on the tweet, it shows the URL in the text and where the quoted inset should be it instead reads "This Tweet is unavailable."

The parent and grandparent are speculating because it works for them but not for others here.