I mentioned elsewhere but Lemmy should implement the Reddit API so we can use RedReader on it. I don't understand what is so great about Sync. I thought the idea of Lemmy was to be CEO-proof, to use someone's term from another thread. That fails if people rely on a closed source program to access it.
I'm unfamiliar with Sync so I don't know why anyone thinks it is something that Lemmy needs. Maybe it is and I'm missing something. I used RedReader when I was still on reddit and it is a FOSS program. I have the impression it is comparable to Sync, but maybe I'm missing something.
The Lemmy software is all free. The people posting here aren't getting paid. It's all community work. So I don't see how Sync is somehow special and in need of being the unique piece of the infrastructure that has to make a profit.
It could be that Lemmy simply isn't that hot a business opportunity for Sync's developer. If so, that is perfectly ok--I'm sure he has plenty of other attrative options.