Comment by megous

Most of the software is this way, it seems. Military intelligenece in our country were recently changing configs on peoples routers without their knowledge or consent to get rid of similarly dangerous thing on several types of tp-link routers.

And if you ever looked inside the firmwares of these IoT Linux boxes (be it sip phones, payment terminals, ip cameras, routers, modems, etc.) you'd not want it anywhere near anything that needs to be secure. OpenWRT or your own thing, or very strict isolation, or nothing.