Sometimes one word is enough to explain something, I had no problems understanding that, and the rest of the comments indicate that too, so it was probably not a "shallow expression" like you claim it to be.

I agree that "you're that experienced here and you didn't understand that" isn't necessarily kind. But that comment is clearly an expression of frustration from someone who is passionate about something, and responding in kind could lead to a more fruitful discussion. "Shallow", "cheapen", are very unkind words to use in this context, and the intent I see in your comment is to hurt someone instead of moving the discussion and community forward.