Not being explicit gives wiggle room for people to let their hopes override their logic when interpreting how it will work.
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's not just the strict denotative meaning. It's also the valence and emphasis of the statement. It doesn't concentrate the mind on "what if it disappears?", but on "how likely is it to disappear?", to which the (supposed; bullshit) answer is 'not likely'. Someone might - on rational analysis - know what it means, and still come away with a better impression than if they said it outright.
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.