Haven’t we been burnt by being not cautious enough when COVID hit? Initially most scientists said “we don’t know if it’s airborne” or they said “there are no signs that it’s airborne” and the media turned it into “nothing flying fear” - and a few weeks later it was suddenly airborne.
“We don’t know” is a normal state in science and policies and personal behavior can take unknowns into consideration.
I'm OK with some caution.