According to the article, 5G uses millimeter waves. For those too lazy to do the \lambda\nu = c conversion to frequency (I am) that is EM radiation from 30 to 300 GHz . EM radiation interacts with matter by a few different mechanisms depending on its frequency as shown here . Microwave radiation, which is what is being discussed here, is absorbed in matter such that it causes rotation or vibration of chemical bonds (see section two of ). For the layman that is called getting hotter. That's why the microwave is in the kitchen.
So any problems being caused by cell towers or cell phones are caused through the mechanism of getting too hot. So if your junk is getting hot while you are standing next to a cell tower, move away from it. But there is no secret radiation that you would not notice at the time.
Human society has changed a lot in the last couple centuries involving everything from social structures, to light exposure during the day, to things in the food. Not much of it has been tested. It's kind of silly to pin the fertility problem on one piece that actually has been very well studied in general terms. Light/matter interactions are taught in undergraduate physics and chemistry.