Awesome definition, extremely on point. I like it even more because it is not technical, as it shouldn't be.
So many times I've heard people justifying they were seniors because they had learnt 3-5 programming languages or solved some difficult problems.
Seniority is not about how many programming languages you know. It is not about a minimum amount of time, although it does take some time to for someone to develop those traits you mentioned...
It is about the team as a whole, about demanding professionalism from yourself, developing others, creating value for other people and for the company... it's about everything you mentioned.