I don't think your anecdotes refute Que's point.
It is always good to show your mentors that you value their time by following up with them. Whether you simply tell them you benefitted from their advice or if you give them a gift, as they say, it is the thought that counts.
It is always good to show your mentors that you value their time by following up with them. Whether you simply tell them you benefitted from their advice or if you give them a gift, as they say, it is the thought that counts.