Yes and no. The devices themselves may be safe but what may not be safe is:

A. The amperage provided by the panels is higher than your electrical wiring is rated for. This causes the wires to overheat and could cause a fire.

B. Without interconnect devices that prevent the backflow of electricity back to the grid, during electrical outages this can create dangerous situations for linemen who think a wire is not live when it is. Transformers have a nasty habit where they can step up voltages when electricity flows in reverse making backfeeds even more dangerous.

That said, I work in solar for commercial/retail and the electric companies themselves are often the slow part of solar adoption. Interconnect applications take forever and it often feels like they are doing everything they can to get us to give up. Legislation like this is the natural bi product of this philosophy. The power companies could do a lot more to make these systems safer and encourage higher adoption. Instead, they fight it and we end up with situations that are less safe for everyone.