That's how preferences vary ?volume spacers affect a significant portion of the stroke, not just ultimate bottom out resistance. air is a non-linear progressive spring to begin with per complicated fluid dynamics/physics.
my definition of plush is a feeling of linearity while using nearly the whole range of travel & not just on big drops, big drops I'd rather use HSC to resist vs a progressive spring, which I find makes the bike feel like it has & is using less travel.
just personal preference & very specific to a given bike's squat/compression curve/geometry
I like my suspension plush only at the beginning of the travel and a very responsive mid travel to "push" against. I also prefer a progressive spring curve to increased (hs) compression damping, to keep the bike more lively.
But I think you would need to remove far more than one spacer, to really feel a difference in the mid stoke.