This is not really surprising at all but does add weight to the fact that digital marketers should all be working to use Accelerated Mobile Pages (AMPs) instead of the standard mobile web pages (or ‘m.’).
Twitter has started linking directly to AMPs from within their native apps (on both iOS and Android).
There has been no official announcement from Twitter yet, but Relay Media has seen the percentage of AMP sessions from non-Google sourced traffic grow from around 4%in December 2016 to 20% in June this year. Considering that the percentage of AMP sessions from Google also grew over this time, it highlights the necessity for us to be using AMP over traditional mobile pages.
This all makes sense of course as AMP offers a far better (faster) experience for visitors.
For more on AMP (and no, I am not paid to promote the project in any way), visit https://www.ampproject.org/.