But it only counts as a violated rule if the entire post contains a bad comment, which not.
No, you still said that his build sucked and that anyone could do it, and it doesn't matter that you said:
sorry if i were too much tough, but seriously, you need to improve a lot your building skills, try to imagine it real, and dont be too lazy and put a little number of bricks.
Your criticism was not very constructive, and it was still harsh.
And correct me if I'm wrong, but you used to post your Demo creations that weren't exactly the best build out there, so you can't yell at some newbie who may have just come out of Demo.