That truck carries 500 packages. That drone one or two at best so to replace one truck you're looking at 100's of flights + return flights. And I'm not convinced the risks are lower.

The semi truck isn't driving through my backyard recording video of me. And I doubt the economics of scale make the truck more environmentally damaging than a drone delivering a single item

In my area packages are often delivered on what looks something like an electric golf cart. It's efficient, safe, and minimally disruptive.

It's almost as if .. if noise, property damage, enviro damage, injury and death.. are the problems, then we should regulate everything that do those things equally rather than trying to pick winners among various transport modes. But among other things, this would mean holding people responsible for the incredible damage anyone can do with a car and the people will not stand for being told they cannot go vroom vroom. Additionally since we refuse to regulate until there is a crisis, anything that is new automatically has an advantage over anything that is old, regardless of which causes fewer issues per unit of work (package delivery etc).