A jibe is some sort of playful banter based on a literal or exaggerated truth. Since your comment does not lampoon any real deficiency except when being hypocritical, there is nothing to defend.

Maybe you should wear a sign on your torso: will make irrational points and then complain about persecution when that is pointed out. I don’t know. It’s just one more idea for when we decide to put all the anti-Rust people in camps.

It's weird to imagine for cniles but discussing a language doesn't inherently involve defending it, especially when it's just someone correcting someone else. I know, that's a very weird concept :^)