I am all for supporting streamers and content creators but if it gets to the point where they take their supporters for granted and will openly talk about them when they are not around thinking they will get away with it.
I would stop subbing and stop supporting but that is just me. You have to look at how it makes you feel and what you could do with those extra funds if you stopped. You can guarantee that when you stop, they'll realize but by then it is too late.