I don't think any of these examples actually imply anything about whether aluminum is "magnetic" (for any definition of magnetic).

All the demonstrations rely on a changing magnetic field, either because the magnet is moving, or because the aluminum is moving. This induces an electric field in the aluminum (as it would in any conductor) which moves the aluminum, induces a magnetic field which moves the magnet, etc., but is independent of whether aluminum is ferromagnetic, paramagnetic or diamagnetic.