I've only ever been using Google Maps for the sattelite imagery, street view, and routin. For those things, Google Maps is still great. OpenStreetMap is what I use for orienting, find cycling paths, trails etc.
So I'm not too bothered by this change. What I don't understand is why hasn't anybody taken the Google Maps routing and use it in OSM apps? Might not be legal, but similar non-commercial projects it should be fine.
There's a lot of effort right now going into making OSM itself better for car navigation. (Take a look at the OSRM changelog: pretty much every feature in the last 6 months seems to be targeted to this use case.) And I'd say OSM is already better than Google for cycling and walking routing.
So I'm not too bothered by this change. What I don't understand is why hasn't anybody taken the Google Maps routing and use it in OSM apps? Might not be legal, but similar non-commercial projects it should be fine.