> Here's some tough love. If people frequently rewrite code that you write it is because they are stronger developers than you are. You, the junior developer, can either sulk about it and feel miserable or realize what an amazing opportunity you have to improve.

Why is this condescending tone and unfounded assumption acceptable here?

It's like, Well, lookie here, a stranger with a generic opinion! What an amazing opportunity for me to assume specifics and talk down to him! You're welcome!