There are 8,000 studies that show 5G is dangerous, not just the one by Dr. Lai used in this article. The notion that refuting or dismissing one article out of 8,000 settles the question is of course questionable.
Secondly, you've made a common mistake. It's not ionizing RADIATION, which are WAVES, that are a major concern here. It is common everyday ions, which are PARTICLES and the NONTHERMAL effects of the radio waves.