It should become a common knowledge that quantum computers won't pose a threat to Bitcoin and cryptography in general in the near future.
That's practically impossible. If we look at how people don't even manage to obtain basic internet or Bitcoin understanding, how would they ever understand what quantum computing means?
I rather have people ask questions where they get their answers as many times as they need, than having uneducated people spread false information potentially scaring off people for nothing.
Education is key in every aspect, so we should help people understand everything where possible. See it as a transfer of knowledge (we > they > others > and so forth) that will help Bitcoin become less doubtful for them.