I think the more commonly held belief is that the data, while unfortunately available right now, was going to become more secure in the near future; but the exodus from reddit happened too soon. So now there is a lot of that data, and the better management and protection of it hasn’t had time enough to happen.
In comes you, seeing the opportunity, and you seek to exploit it.
Well, I am not any official representative of Lemmy. My belief in what the plans are or were are based on things I’ve read with also no citation. Best if you were to find out from the Lemmy development team and from Lemmy instance hosters. They’re the ones with the authority, history, and investment that can accurately tell you what’s what.