His very quick EC261 compensation for a mechanical on Swiss with no effort was pretty much unheard of. Just have a look at the SWISS forum to get an idea of people's reactions over there. A comparison of how his compensation was processed is basically like getting struck by lightning on a clear day.
Of course, it's very well possible that LH Group has tools set up to monitor his or other influencer's activities and that he is in no way sponsored by LH.
I don't see how quick EC261 compensation for a flight on Swiss shows that he is "sponsored" by Lufthansa. But there are people on this thread who would come to that conclusion if he said the pretzel roll was good.