No. The squash lives in a separate node group that the modifier reads.

No. Render farms and other computers render the same result.

It squashes the whole mesh. That suits props, balls, logos and simple creatures. Bone-based squash for rigs is on the roadmap.

Alembic export keeps the deformation. A bake to shape keys is planned.

The object must move inside the scene frame range, and contact keys need sharp handles.

No. No network access, no licence check.