Hi Slow Learner,
It's not actually my quote, it's Daniel Ingrams
and of course it's oversimplified to make some particular points. Clearly being aware
that things are impermanence, etc, can be helpful in dealing with stuff, as you say. On the other hand, that is a conceptual
awareness of impermanence.
I think that one of the key points is that thinking about impermanence
is not the same as having real insight
into it, though presumably the former is helpful to developing the latter...