This constitutes a personal insult (calling him immature for his age), so you aren't walking your talk. In this comment you're going much further than Linus's review being discussed, which doesn't contain any personal insults.
Maybe you think you're giving zelon88 a taste of his medicine like this, but if truly believe that people are obliged to communicate in a corporate-friendly manner you wouldn't be dishing out personal abuse like this to make a point. Overt tit-for-tat abusive communication doesn't fly in a modern psuedo-friendly corporate environment; you have to be more clever about it. In other words, you should lead by example.
> Clearly nobody has ever done it to you!
You really think nobody has ever been curt or even rude with zelon88? That beggars belief. Of course he has been on the receiving end of it; everybody has. Don't waste your time with the "you don't know what it's like" argument, nobody is going to believe that. You're wasting your time and undermining yourself with this tit-for-tat approach.