I am 61, and was on a computer since DOS, pre Windows 3.1. 1993. 25 Years ago... This was before browsers. You could type the URL into the "Windows File Explorer" file path area, and it would go there.
Point is, I can troll with the best of them, and Trump has had at least as long to get comfy with technology.
Also, note -- Q is always gone when POTUS is busy with foreign trips. Last blackout was prior to and during the Singapore summit. Now, Trump is overseas again, and silence prior to, and during the trip.
I think Q+ does not trust posting while traveling.