No, because 5G specifically, has not been tested.
When people call an entire electromagnetic spectrum band "5G" it's a clear indication that they don't know what the hell they're talking about, and just repeating anti-5G talking points that they read from some BS article.
5G is a communications protocol, not a stand alone technology. It includes technologies capable of meeting that protocols specifications.
In the case of the 5G communications protocol, specifications for using certain electromagnetic frequencies, at certain (ultra low power) power setting are specified.
Those particular frequencies are found in the microwave band of the electromagnetic spectrum, and according to the 5G protocol, those signals will be broadcast at roughly 3 watts of power, or less.
That's about as much radiation emission power as a night-light, and at a far lower electromagnetic frequency than the radiation of that night-light.
It's a nothing-burger. Those same frequencies have been in widespread use for decades, at hundreds, and even thousands of times the power levels of 5G transmissions. They're plenty tested.