This is the beauty and crux of open-source software, you can contribute with your idea and software codes, but at the same time, you are bounded by what is available, which depends on the developer's time and experience, e.g Netgear and Asus have better support/ features in Homeassistant while OpenWrt is only used for tracking devices/presence sensor.
On the topic of forum support, there are quite a few members, without whom OpenWrt couldn't be noob friendly to name a few @frollic @pavelgl @slh and @trendy. 
but then there are some members in other forums e.g in DD-WRT, whose signature line for each noob's Question is "Google that" 
That was one reason why I didn't go with DD-wrt, even though a guide already existed for it for my purpose.
I wrote the OpenWrt guide itself with the help of the forum's members