Third-party Twitter apps including Tweetbot and Twitterrific are offline, but why?

Oliver Haslam writing for iMore

The issue, which is affecting Twitter apps on all platforms including iOS, macOS, Android, and Windows, hasn’t yet been confirmed by Twitter, and, worryingly, it isn’t yet known whether the problem is a glitch or the result of a decision made by Twitter itself.

Still no word from Twitter. My guess is this is intentional, but we’ll see.