[StavrosK]

"Pointing out" is what you did, "rude" was how you did it.

For example:

"It's almost as if you don't understand that rudeness is about the tone instead of the content".

Or:

"It looks like you're trying to move the goalposts; would you like some help with that?"

Or:

"> 'It's not patronizing - it's pointing out a basic statistical fact' Interesting how you think the two are mutually exclusive."

Etc.