I signed up for the subscription here for the same reason I signed up for many other resources I probably didn’t need to. I paid into their success and survival. I discuss my reasons here — The Medium Advantage
If a product brings value to my life I would rather pay $5 a month and see it grow. What is the alternative, to cancel my account on nothing but principal? I think $5 a month is a small price to pay for a great platform and no advertising.