I’ll try to help you say what you should have said: “Apple doesn’t have great security, their major competitors are far better because [reasons] and instead of Apple products you should be using [competitor].”
Since you're on a technical forum but talking about mass-market products, you should also clarify your audience: “if you’re a technical user, [competitor_1] is the best security you can get, while [comptitor_2] beats them on usability and user experience. If you’re looking for the best of both worlds, [competitor_3] is your best bet.”
Because what you did is walk into a discussion, say “nah you’re all wrong and besides that you’re all idiots” and walked away. Back your shit up, man. If you don’t think Apple is the product to use because of their security practices, recommend an alternative. If an alternative doesn’t exist, then keep your mouth shut because some security is better than no security and saying “shit’s all fucked anyway” isn’t going to help anything.
Apple is better than the competition with regards to security and privacy. But that's a very low bar.
Do you actually disagree with the substance of what I said, or are you just criticizing my style? Because if you agree with the substance then I would say that the style is justified.