I mean... I have an Aqara Matter over Thread smart lock that connects via AppleTV (which is a Thread border router) to Home Assistant. And I can control the lock both with HA and Apple HomeKit. And this whole thing works flawlessly. Aqara, Apple, open source HA. Never thought this would be so smooth.
I think the whole point of Matter is that the devices are manufacturer independent and you can use any device with any hub.