Shifting to another platform isn't the solution, as it's not actually the likes of Patreon that has the problem, it's the financial institutions that they have to deal with. These institutions are often incredibly conservative and they strongly dislike having to deal with adult-themed financial transactions. They're the ones who set the policies and dictate them to Patreon and similar platforms.
Moving to another platform wouldn't solve the problem, just delay it. Not to mention that Andrealphus would lose a fairly substantial amount of money as many people wouldn't follow them across platforms.
That is a very good way to get a project shut down, as it is seen as an attempt to circumvent rules and policies, an act that itself is a breach of terms and conditions.