I downloaded the Patreon app to listen to podcasts. Regardless of who is to blame from my perspective their imperfect app provides a better user experience than Firefox or Chrome on my Android phone.
It's Apple on IOS for not even being able to get a proper web app off the ground.
For android, there's probably no primary blame here. But there is financial incentive to produce an app over a mobile website when given a choice.
They could have trivially added that to their website.