Why doesn't openwrt/lede start designing and manufacturing hardware? I'd imagine alot of people would be willing to shell out a premium for a open source designed hardware/software package. Plus there wouldn't be any more of those threads asking "what the best router for LEDE/openwrt". It would help fund development and even could put several people fulltime on development.
As far as hidden hardware backdoors from china, would simply randomly select routers to be x-rayed in the production line. It's not impossible, just a matter of money and will.
I am not familiar with the LEDE/openwrt community and haven't done any firmware development myself but the business opportunity is mouth watering. Think of all those people with cryptocurrency, sensitive government documents, etc. It's a huge vacuum in the market.