Why not instead ban anyone claiming global warming is real?
There has never been:
1. Provable chain of custody of data from sensors to reports.
2. Provable calibration of each and every sensor to lab standards from which numbers are derived.
I’m sure you’ve noticed, but the claim that “this year is the warmest on record” is always based on temperatures claimed to have been recorded in some remote corner of the world where independent data is unavailable.