“stupid” here stands for uninformed, succeptible to propaganda, and unwilling to examine presupposed beliefs in light of empirical evidence.

also # of arguments in favor or against something is an absolutely useless metric unless you properly weight every one of them. “we don’t know what to do with the waste which actually hasn’t killed anyone yet” does not outweigh “we are dumping the waste into the air and millions are already dying from the consequences.”