(Context: Matter is an application layer protocol to control smart home devices, bring them into your Wifi or Thread network, and they ought to work with Homekit/Google Home/Alexa/Smartthings/Home Assistant etc. at the same time)

I'm currently working on a Matter device myself and the overengineering is unreal.

The idea is great (standardized messages over IP, no internet required, open source SDK on Github) but if they had just used MQTT with some standardized JSON messages and two or three fixed onboarding flows it would have solved the same problems with 1% of the effort.

But now the project is absolutely massive, almost 1k pages for the base spec, 1M+ lines of (mostly C++) code for the core SDK, no stable or even well defined API, almost no documentation. Progress is glacial, unsuprisingly. Bug fixes do not seem to be backported to older release branches but there is no source code compatibility either, so the security story will be interesting for sure...

Most discussions seem to happen on an internal Discord server and Wiki for paying members only, so the project is not that open either.

I really hope that the entire thing gets scrapped and a simpler approach will rise from the ashes...