Yes but the difference is that there were reasonable grounds to suspect that prolonged exposure to RF waves might possibly cause some harmful effects. The WHO didn't categorize radio frequency radiation as a potential carcinogen based on no evidence at all:
https://www.iarc.who.int/wp-content/uploads/2018/07/pr208_E.pdf
The possibility of there being a link was not absurd, per se.
All true, but that doesn't disprove my point. The risk was non-zero, so it was still worth investigating.