I don’t understand why he didn’t just respond that your games will be gone. Or at least “in the worst case, your games might be gone”. People aren’t stupid, they know exactly what the evasive answer means, so why evade at all?
Some number of people will read that and say "it's safe, I knew they would assuage my concerns" that wouldn't otherwise if they just said "well, you might lose you games in that case.". Those are the people being targeted.
And by those people I include you and me, but for different things. It's impossible to be completely objective and rational all the time, and I'm sure you can come up with just as many instances as I where hope overrode reason for a while. Statements like these are specifically to keep us around when we fall into that category.
It amazes me that this persists, it is such a bad sales tactic. If the person you're dealing with isn't a sucker, now you've destroyed trust. (You've destroyed it later with the sucker, when they realize what happened. Hope one sale was enough for you.)