From the most barebones news articles I read about the topic (and in this country they generally all are), this has already been rolled out in other countries to no great issue? Here it's a turf/jurisdictional spat between FAA and FCC over not having gotten all the approvals through the desired channels in time for rollout?
Although, I guess papers like this detail the issue more carefully: https://ecfsapi.fcc.gov/file/7021340930.pdf https://www.rtca.org/wp-content/uploads/2020/12/Slides-5G-In...