Perhaps custom ROMs will only ever exist among a relatively small group of "hackers" or whatever you want to call us, but I do really hope we can grow this community in the coming years.
You know that xkcd with n standards, let's add another, now it's n+1? That's kinda how I feel about Android ROMs these days. I'm hopeful we can join forces to a greater extent, and make these platforms easier for less-technical folks to access.
I feel like custom ROMS have become really good these days. I have been using /e/ OS for 2 years, just like a normal stock Android. I got the phone with it (no need to install it myself), and never had to fiddle with it. I don't have the Google Services, but that's my choice.
LineageOS, GrapheneOS, CalyxOS, I think all those are becoming really good.
I've been using custom ROMs since the Galaxy Note 1 came out (my first smartphone). My LG V20 is still working and getting mobile service while on LineageOS. GPS has been finicky on it but I have a Galaxy A70 for driving around for now.
You know that xkcd with n standards, let's add another, now it's n+1? That's kinda how I feel about Android ROMs these days. I'm hopeful we can join forces to a greater extent, and make these platforms easier for less-technical folks to access.