Exactly. This system makes things easier on users at the expense of making it harder on creators. I think that's kinda the point though.
If your funding method relies on consumers essentially donating their money to you, it's extremely important to make that experience as seamless for them as possible. Patreon is great, but it does require users to go out of their way and make a conscious decision to fund _you_ specifically. That's a lot of extra effort that person has to go through just to give their money away to a random site they happened to visit for a couple hours that month.
With this system however the user just signs up for a single service _once_ and subscribes, and that's the full extent their involvement. The trade-off is that the content creator is now the one who has to go through the extra effort of setting up an account on this service, but unlike content consumers, the creator actually has an incentive to go through that process (free money) which makes it worthwhile for them.