I don’t think it’s ironic at all - Infinity is and always has been a Reddit client. Subscription fees seems to be the only possible way for it to continue to be a Reddit client and if only a small number of people are willing to pay, then that’s fine. It’s an open source project and doesn’t need to make enough money to pay a salary. It just needs to pay the API costs.

Infinity also doesn’t need any of it’s existing contributors to continue using it, they could all move on (perhaps start work on a Lemmy clinet?) and other people might keep developing Infinity. Open source projects change hands all the time.

If someone wants to make the app into a client for another platform, they can simply fork Infinity. It doesn’t make any sense for Infinity itself to change into a totally different app. And it would be totally different, Lemmy has different features.