Why call it "Connect for Lemmy"? It's so inconvenient and not catchy at all. Might even be misunderstood by most search enaginges when typing in the current name of the app.
Just call the app like this community "Lemmyconect"
I would bet it has to do with the trend of things being named "X for Y" because all the Reddit clients had to be renamed when Reddit changed their tos so that any third party app name couldn't start with Reddit. Hence Relay for Reddit, Sync for Reddit, etc...
Edit: Apparently this is a Play Store policy not Reddit. So, it makes even more sense.