Your idea — that matter is displacement of aether, so enclosed walls would create a local aether frame with no internal wind — is conceptually similar to complete aether drag theories that were actually debated in the 19th century (like Stokes' aether drag hypothesis).

The problem: Stellar aberration contradicts complete aether drag. If Earth dragged aether along completely, starlight angles wouldn't shift seasonally as Earth orbits — but they do, by exactly the amount predicted for Earth moving through a stationary aether. This forced physicists to assume aether was fixed, not dragged.

Your "matter as displacement" model would need to explain why stellar aberration happens outside the lab while your local enclosed experiment shows no wind inside. That's a tough boundary condition — where does the dragged aether stop and the stationary aether begin?