Alternately and more likely they tried something once and didn’t fully understand it. Now they’re asking questions out of ignorance rather than winning an internet argument in some way.
Their questions are actually pretty straight forward, I really don’t understand the comprehension issue you’re having or why you feel the need to add the incredulous response.
Do you find the need to call people out like this in everyday conversation?
The other side of that coin is the NSA developing SELinux