MAC addresses are trivially configurable in software. Even if they weren't, its easy enough to buy random $5 wifi enabled dev boards from Aliexpress or somewhe

MAC addresses are trivially configurable in software. Even if they weren't, its easy enough to buy random $5 wifi enabled dev boards from Aliexpress or somewhere similar, where detailed records tracing individual boards from manufacturer -> distributor -> reseller -> user are highly unlikely to exist.