Because your comment indicates that you clearly don’t understand that people sometimes ask questions not because they want an answer but for emphasis or dramatic effect.
This was, clearly, such a case.
https://en.m.wikipedia.org/wiki/Rhetorical_question
Digging down on your snark when you’re called out is a bold play that doesn’t generally work. Most people have this thing called humbleness but I guess you left it with the rhetorical questions.