There is near zero actual risk. These systems have been around for a long time and are widely deployed in Europe.

Circuit breakers have been around for a century and work great. You plug something in that pushes or pulls too much current and pop - disconnect.

So while they are absolutely safe, there's huge FUD coming from the utilities who lose revenue AND PROFIT they were getting from you with each system.

Pacific Gas and Electric, Southern California Edison, Florida Power & Light (FPL), Commonwealth Edison (ComEd), Consolidated Edison (ConEd) are all for profit monopolies.

Asking them if it's safe is like asking Microsoft if you should switch away from Word. It does not matter the reasoning, the answer was always going to be the same.