https://web.archive.org/web/20200118133242/https://twitter.c...
Also, a shorthand for "give me the oldest copy of something" is
https://web.archive.org/web/0/https://example.com/
You used to be able to read any public thread without logging in.
Then it became "only logged in users" to prevent scraping for AI training data (Apparently)
Now it's "you can see the linked tweet but not the rest of the thread unless you are logged in"