Honestly, it would be an amazingly trojan-horse way to drive reddit users to Lemmy. Leave Sync for Reddit up, and then just have it be a redirect to Lemmy under the hood, maybe even use the API to "migrate" people over - if only for copying their username and some basic data.
That was kind of the issue to begin with. That's why it's "For Reddit". Google even had this stupid naming scheme because "Reddit Is Fun" existed at the time, and they even had to change to "RiF For Reddit". The "For Reddit" part already mitigates that worry - as I understand, that was the entire point of Google enforcing that policy to begin with.
And honestly I'm just kind of being wishy about it. I'd have loved to see all of the Reddit apps basically Trojan horse their users into Lemmy rather than simply shut down. We can dream can't we? :P
Reddit made that change to apps not Google. I remember when they wanted to have all reddit clients be "for reddit" because they were about to put out the official app