I think it depends on what 'awareness months' are actually for.
I might be aware of childhood cancer, but perhaps an awareness moth might alert me to how difficult it is for families - how it is for children to have a sick sibling for example, or how parents often have to give up work, and lose their financial safety net. When it comes to asylum seekers I might not be aware of how many of the are children separated from parents, or the fact that many want to work and can't. For strokes, I might not be aware of the warning signs.
'Awareness months' are pretty pointless if they are just about raising more money - as you say, so easy to text AWARE and then forget about it. But if they educate, and get people to think about what they prioritise, how they vote, perhaps even remind them to hug their loved ones a little tighter, then maybe that's no bad thing.