Growth of usage in 1.1.1.1 has exceeded our wildest expectations. 
#1dot1dot1dot1pic.twitter.com/epGkren7v9
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
Key exchange is acceptable on the RPi3, very slow on other RPis. Same for the cipher, AES is slower than ChaCha on these devices.
The 1.1.1.1 supports ChaCha I think 
It does, but if the UA doesn’t look like a mobile device and the client prefers the server suites, it won’t :)
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.