Common , guys, forget this idea of having ATC checking if the gear is down or not. .we are not in a small local VFR local airport checking Bonanzas.. We are talking large civil multi runways airports with large capacity .
I've already tried to explain - but my post was moderatored out - that San Francisco ATC , also not a
small local VFR local airport checking Bonanzas, once advised me that my Boeing 747 was approaching finals with "No Gear". Not forgotten, deliberately held due to a flap problem under investigation that necessitated an eventual go around to a second successful landing approach.
I absolutely agree that it is not an ATC responsibility, but no ATC guy wants a disaster to close his runway if he is in a position to do something about it.