Except that wasn't why Paypal became what it is today. The P2P aspect and sufficiently protecting the customer during early days of e-commerce is why Paypal became so big. Removing the need to enter the full credit card info - was a nice to have - and secondary, once use of Paypal became more ubiquitous.
Infact, Affirm would have to hope that customers will use anything other than credit cards to settle with Affirm - because it will be cost prohibitive for them to do that. They would have to find ways to justify the customer settling via ACH. Too little, too late imho.
