How do you feel about Matter [1]? Asking as someone all in on Home Assistant, open local protocols, and ready to reverse engineer and spend whatever is needed for digital sovereignty, for both myself and the community.
(Not the OP, but want to spread awareness, sorry.) The Wikipedia page already lists the greatest disadvantage:
> (..) the ability to commission a finished product into a Matter network in the field mandates certification and membership fees, entailing both one-time, recurring, and per-product costs. This is enforced using a public key infrastructure (PKI) and so-called device attestation certificates.
Matter is designed to necessitate phoning into the internet for certification, which allows all manufacturers to just easily add-in phoning into the internet for telemetry. Furthermore, it does not define exactly which functionality must remain if a device is disconnected from the internet for a long time (assuming the user is trying to avoid sending out telemetry, not even bypassing certification).
In my experience, Matter is okay except that it’s built over IP and manufacturers seem to be unable to resist using that juicy IP connection to talk to the Internet.
Thread should not have allowed Internet connectivity by default.