I'm sure they'll have a plan for how many to release so the price doesn't dump overnight.
That's beside the point. The point is that you and your potential Ripple investment solely depends on what they will do, as they can do anything. Or even the US government could force them.
Which is one of the problem Bitcoin and virtually every altcoin that followed solved; using a decentralized and trustless system.
This is valid for every coin with infinite or coin with outside supplier like DOGE, USDT and so on.
For example, Bitfinex just printed 100 000 000 new USDT
Do you think they 'have it in reserve'?!