You make a good point, but I'm not sure we're quite to a place where remote-piloted garbage trucks will be considered safe, except maybe in the dead of night when there's few other vehicles on the road.
Even then, though, in my locality, they don't force everyone to use a uniform (i.e. easily lifted by a robotic arm) garbage can. There's a strong libertarian bent in Oregon, so forcing everyone to pay $2/month or buy outright the type of can that'll interface with the truck isn't going to happen. As a result, probably 2/3 of my neighborhood uses their own, cheap cylinder cans, requiring that the garbage guy gets out and lifts.
It's my understanding that the garbage utility wanted to simply give everyone the cans and bury the cost because of the savings through efficiency. However, that was greeted with scorn; people who, on principle, didn't want to pay for other people's cans nor be forced to pay for their own, rallied to ensure that they would continue to be allowed to use whatever can they wanted, damn the cost to everyone else.