Some people do (I have already received multiple comments to this effect). Mileage possibly varies.

Signalling sophistication and confidence when there is no object level reason for such confidence is one of the more destructive of human social incentives. I heartily endorse measures to prevent this. Seeing that someone is willing to admit uncertainty at the expense of their dignity increases the confidence I can have that their other expressions of confidence are more than social bullshit.

I would of course encourage you to stop using "magical reality fluid" as soon as possible. That is, after someone figures the philosophy (or epistemology or physics) out with something remotely approaching rigour.