Spoiler alert: No. There's a whole bunch of bullshit: https://developers.home.google.com/matter/integration/pair#p...
You can sort of run your own device if you're fine with giving google far too much information and they can block you at any time.
Face it, bigtech has a hardon for closed ecosystems. If they could they'd make it so every computer that wants to send an ethernet packet has a private key blessed by some bigtech cabal which they can revoke, but luckily for us this standard predates this gross new fetish.