Just my personal opinion here, I think this is an acceptable rhetorical device normally, but specifically in covid discussions this is an off-putting approach. "Just asking questions" is a common strategy among covid deniers and anti-vax folks who are also often pro-lab leak hypothesis.
When I see a comment like the top most one in this thread, I can't tell if the author is actually coming to this discussion in good faith with a fact based approach or they are a nut job "just asking questions". Is the author meaning for the audience to infer actual confirmed facts or are they trying to imply guilt without any actual evidence? In this situation it is better to actually write out the facts with sources verifying them. Without that, the author risks being lumped in with the crazies.
When I see a comment like the top most one in this thread, I can't tell if the author is actually coming to this discussion in good faith with a fact based approach or they are a nut job "just asking questions". Is the author meaning for the audience to infer actual confirmed facts or are they trying to imply guilt without any actual evidence? In this situation it is better to actually write out the facts with sources verifying them. Without that, the author risks being lumped in with the crazies.