just allowing yourself to be exposed to their work:
1) if you are actually paying to view their work, that should be self evident that you are supporting them
2) even if you think you're obtaining it for "free" it legitimizes them by increasing audience numbers. someone, somewhere is tracking numbers. even if you are not directly being counted, you are creating a demand. and supply will form to fill that demand pull.
3) even IF you think you are insulated from their messaging, are you? how can you be certain? you cant know what is subliminally embedding