Transferring spectrum from old to new users have proven to be much speedier and easier than imagined by PCAST and similar plans of 10 – 15 years ago. Getting governments and government agencies to cooperate is the harder problem.
The only way through our 1,200 year drought is get better at managing and using water than we have been. While RF spectrum isn’t in a similar crisis yet, it’s wise to prepare for an eventuality where demand far outstrips supply. Spectrum, like water, is a finite resource at each point in time even if both are reusable.
It goes without saying that US regulatory performance on the 5G mid-band and aviation is well below the international standard. Dickson was a poor choice when the former president appointed him, and he hasn’t grown into the job. A balanced hearing would show this.
The proper role of FAA in this and any similar controversy is to conduct its own measurements and share them with the responsible parties. It should share its findings on altimeter vulnerabilities and leave the modeling in 5G emissions to the experts.