There are a lot of smart people who are less sure that our perceptions reflect reality. Free will, time, consciousness, space all feel very real. But when you interrogate them enough, those fall away. Go fast enough and your time slows down. Go as fast as a photon and time and distance disappear entirely. Yet we’re sure they’re real. At one point we absolutely knew the sun revolved around us. We could see it doing that daily.
One smart person on free will below. There are so many others. There’s certainly no consensus that “our experience = how things are”.
https://www.samharris.org/blog/the-illusion-of-free-will
The point is that our perception doesn’t provably equal “truth”. To make absolute statements you need to be a lot more sure and be more correct than all the smart people who say “not sure yet”.