Does Gumroad need PayPal?

Does Gumroad absolutely require PayPal as a payment option for its users? I understand that Gumroad is a popular platform for creators to sell digital products, and I'm curious if the platform has any flexibility in terms of payment methods. Are there any alternative payment gateways that Gumroad supports, or is PayPal the only option available for both buyers and sellers? Additionally, if PayPal is not a requirement, how does Gumroad ensure the security and ease of transactions for its users?