Why would the CIA need Google's cover for any of that? The Feds have been flying spy satellites since the 1950s and there's plenty of classified satellite launches.
Because anybody near-peer to the US at this point has the capability to shoot down satellites, and anything launched on a classified satellite launch is a prime target.
The US has been prepping for a showdown with China over Taiwan for quite a while now. It's the primary focus of US military strategy, and considering a when, not if. When we're sinking their ships (and them ours), shooting down satellites won't even register as an escalation.