They actually did that with the SimplePhone. Last time I looked the pages were down but I know I archived them on the wayback machine.
They made lots of promises, including that a downloadable ROM would be available, the whole thing quickly crashed and burned.
Reddit had some pretty extensive threads about it. The whole thing seemed like a grift (it was) and convinced me to dump all their apps.
Anyway, if this is something you want to do you could check those threads, I know people linked to the phone they were using (from Alibaba) and the source code was on Codeberg iirc.
That was previously available in Voyager. Removed or deleted comments could be tapped to show the comment. I really liked that feature as it provided context not only in reference to the thread, but also as to how particular mod/mods worked in the community.