Sure, the view that volition is an illusion is not self-contradictory. And I get that this is a very useful view, because it lets us set aside "conscious inner experiences" and just analyze the mind as a deterministic machine with inputs and outputs. This lets us expect to eventually understand the mind/brain fully using only the physics and computing tools we already have.
Now it leaves conscious experience itself as an unexplained phenomenon, but maybe that will never become important.
I take the word "illusion" to mean, some type of experience which misleads one about reality. And "consciousness" to mean, the experience of having experiences.
So I parse this claim as something like, "People both do not have conscious experiences, and also do continuously have a particular type of conscious experience: a misleading experience which leads them to believe they have conscious experiences".
Yet I see this claim made seriously and often. What am I missing?
"Everyone" doesn't vote all-red or all-blue. 30% vote all red, 30% all blue, and 40% stay home because there is never a sensible centrist candidate. Each of the 30% active voters then get mistaken for 50% of citizens.
A municipal government doesn't have a way to impact anything China does. They're stuck between either doing ineffective things like drinking straw bans, or just admitting their helplessness.
On the national politics level it's only almost that bad: we (the US) have very little way to influence what China does with their trash. It might take Trumpish levels of confrontationalism from a Democrat administration to have any impact at all. Sad that candidates aren't taking on this reality... it's much easier to sell a rosy narrative to voters that we can fix everything by making sacrifices at home ala the Green New Deal or somethimg similar.
Now it leaves conscious experience itself as an unexplained phenomenon, but maybe that will never become important.