It’s fine to question individual doctors.
It’s fine to question corporate-sponsored think tanks.
Is it fine to question a scientific consensus on effective ways to fight a global pandemic?
Yes, it is always fine to question scientific conclusions with legitimate concerns.
Or we could always revert to letting the church decide what valid science is, I guess.
See, scientific consensus is usually based on data and certain statistics. Those who question it usually express opinions without addressing the data and methodology. An opinion is not enough, you need to be very specific.
In low-context, short form meme warfare with the only intention of spreading an opinion that the consensus believes is both incorrect and detrimental? Absolutely not. That's what you're doing right now. Knock it off.
So without being able to reasonably comfortably speak against a scientific consensus you end up with neither science nor a consensus.
If it cannot be questioned, is there really a consensus?