Yes, Surveyor was unmanned, but didn't carry a reflector.
The Russians and the French actually placed reflectors on the moon with unmanned landers, after the U.S. was there. The problem is, that they could not be placed with the care a human could provide and return a much weaker single.
Some have even bounced off the Russian lander, but again the single is very weak.
But I guess people will believe what they want to believe.
Some even think the Secret Service, the FBI, the CIA, and LBJ were all involved in JFK's murder.
