Doesn't Matter require device attestation? To me, this says, "Matter will never be compatible with cheap DIY devices like ESP32 devices". And also makes me suspicious of being able to create a Chromecast competitor that removes ads, or whatever.
Matter certification requires that controllers do attestation (validate that the device says they are who they say they are) but you are allowed to offer an option to users to bypass it (like Apple does today for HomeKit today).