Did @instagram remove the "Copy URL" option? Can't find it in the latest Android version.
That was the only escape hatch.pic.twitter.com/FWUBY9ZvYw
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
Private account maybe
Ahhh yeah that's probably it
Maybe it’s missing on private accounts?
Yep, that's gotta be it
Maybe it's a "locked" user (private), that makes posts non-linkable (kinda how Twitter won't allow you to RT private users). Also, how come you aren't using the PWA? :)
Yeah probs was it. Because standalone mode in manifest was broken on nightly (again) 
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.