I read it in a more general context. Without Part 22 live yet can only guess, but if a mechanic were to buy say an e-lsa kit, followed the required steps per Part 22,
built the aircraft with their own QC system, and issued their own Statement of Compliance, I dont believe the rules could stop that.
The kit OEM probably wont like it, but would be similar if copied an STC install however supplied my own parts and "approvals." Once 22 goes live next month, will be interesting to see how its laid out. For example, find a TC thats in the public domain that fits MOSAIC, develop a Part 22 compliant process, and build new SLSAs per the old TC drawings....