The problem with your request is that any single example would be easily dismissed as some random event that is likely to happen to someone when enough players play enough games and every single turn is subject to a random event as gems refresh.
So the problem becomes, “how much video, and how much analysis, would constitute a sufficiently large sample to be convincing?” An hour? Certainly not. 20, 50, 100 hours? Maybe, but who has the time to analyze all the drops and cascades, and who is posting the companion PC/Mobile video for us to analyze and compare? I see weird strings of same-coloured mana dropping in vertically all the time, but I can also go for hours with it not happening. I hear the same experiential impressions and anecdotes, and I have formed a mild impression that there is something to it based on the testimony of these multiple witnesses. I think what would be helpful is for PC/Mobile players to post counter-examples that show that you get exactly the same kind of experiences on your platform that we do on ours. If enough of those appear, then maybe the console players can be convinced that we are not subject to anything that you don’t also deal with on a daily basis.