If it starts worrying more than astronomers do, sure. The few is as in percentile, at same level of the worry.
More generally, if the degree of the belief is negatively correlated with achievements in relevant areas of expertise, then the extreme forms of belief are very likely false. (And just in case: comparing to Galileo is cherry picking. For each Galileo there’s a ton of cranks)
If it starts worrying more than astronomers do, sure. The few is as in percentile, at same level of the worry.
More generally, if the degree of the belief is negatively correlated with achievements in relevant areas of expertise, then the extreme forms of belief are very likely false. (And just in case: comparing to Galileo is cherry picking. For each Galileo there’s a ton of cranks)