The idea is cool but as some pointed out the "About" page could be a bit more informative on what the rom contains (e.g. what is included, what is planned to be included, what are the limitations etc)

Also there are a lot of devices listed on the website but if you look a bit closer on the website you realize half of them are discontinued (38 active and 44 discontinued to be precise). I did some quick scrapping and this is the current status per brand:

Asus: 2/2 active (100%)

Nothing: 1/1 active (100%)

OnePlus: 8/10 active (80%)

Motorola: 4/5 active (80%)

Sony: 2/3 active (67%)

Realme: 5/10 active (50%)

Xiaomi: 16/33 active (48%)

Samsung: 0/12 active (0%)

Google: 0/4 active (0%)

10or: 0/1 active (0%)

Micromax: 0/1 active (0%)

Total: 38/82 active (46%)

Maybe it would make more sense to try to focus on one or two brands instead of trying to do all of them (at least at this stage)