There wasn't anything rude there. Merely pointing out an overlooked facet.

Rude would be sprinkling in "What are you, daft? Never been out of your bubble?", or a similar insult on the end.

Unfortunately, the money laundering scene being what it is today, I wouldn't be surprised if more than a few mobile games were nothing but thinly veiled links in a laundering scheme. I certainly see enough game clones nowadays that are nothing but ad delivery frameworks with a thin veneer of genuine artistic credibility tacked on top that I can see games have shifted from being true labors of love to financial instruments.

The Socratic method of questioning is not rude. It won't make you many friends; but it isn't rude.