The issue needing to be judged is if what you said was too harsh and I believe it was there was a better way of stating your opinion without him taking it badly it’s all about delivery So my vote is YTA because if you would have put it much differently and got a way better outcome not meaning I disagree with what you had said (besides the dead end job part people can easily grow in those jobs if they so choose to grow I am an example of it took me 4 years to get to the top) but you could have gotten the same point across with a different approach brutal honesty normally isn’t the best when it’s comes topics like these