It's unfortunate that people have used that in the past as an excuse to claim that replica weapons shouldn't be restricted or prohibited... without understanding how replica weapons are still able to achieve the same result of a real weapon in burglaries and muggings. (as a trained criminologist, I know that you need to be mindful of the mentality of an offender, to realise that a perceived threat can be just as effective as a legitimate threat)
Despite people not using them to kill or wound, the robberies they make possible leave people traumatised and often out-of-pocket of whatever was stolen. The ability to commit a serious offence, with or without violence, makes owning a replica weapon (toy or not) a big responsibility.

How would people here feel, if their Gen1 Megatron was stolen and you found out it was used to rob someone. What if that person died of a heart attack from the fright, or they were on a tight budget and couldn't afford to have money or possessions taken off them.
We may laugh at the thought of a Gen1 Megatron fooling anyone (in a well lit collection room), but when you are looking down the barrel of something that looks like a gun, in the dark, you don't ask if it is a real weapon or if it is loaded.
A replica weapon is the same as an unloaded real weapon - they still achieve the same result in a burglary/mugging as a loaded real weapon.