I agree that improving emotional regulation is a first step to building up the energy to change a situation.

My issue with modern internet style pseudo-stoicism is that it's fixated on becoming indifferent (the title of this article, even) and breeds a sort of learned helplessness. The article's sub-heading is about prisoners and warriors, but using techniques optimized for being a prisoner or stuck in a war isn't quite right for someone navigating a toxic relationship or toxic job where you're not actually entirely helpless.