Why do you think they haven't considered the possibility?
So why would I want people to discuss something that could potentially have that kind of impact? Because I want people to face all of the possible consequences for their choices, not just pick and choose which ones they will consider and acknowledge.
"The Lancet letter (also referred to as Calisher et al. 2020) was a statement made in support of scientists and medical professionals in China fighting the outbreak of COVID-19, and condemning theories suggesting that the virus does not have a natural origin, which it referred to as "conspiracy theories".[1][2] The letter was published in The Lancet on February 19, 2020, and signed by 27 prominent scientists, gaining a further 20,000 signatures in a Change.org petition.[3][4] The letter generated significant controversy over the alleged conflicts of interest of its authors, and the chilling effect it had on scientists proposing that the COVID-19 lab leak theory be investigated."
Where's the cycle?
2) You asked me why I thought people don't want to consider that possibility, so it's pretty dishonest to now say the premise on which my opinion is based has no basis. If you were arguing in good faith, that's what you would have started with, eg: "People aren't avoiding it" not "Why do you think they are avoiding it."