Probably because the actual contribution is being done by a handful of people while others are waiting on their asses. Btw posting for new stuff which is actually really hard to achieve is not something someone will do happily unless he runs into some kind of trouble..
That said i saw some older Gurus joining in on simos although they trashed this forum on certain posts on social media.
Now maybe it is your turn to fill the forum with useful posts instead of pointing the obvious
Dont get me wrong , but there is still a lot of interesting threads to read on here for sure, but you do get what I mean anyway.
And yes I plan to give something back in the ways (which are my experiences so far) I can , but there is still a lot ahead of me before I can reach the likes of some other members here.
But ME7 was used in many cars and brands there is still a lot to explore and document fully. 5 cylinders, vr5 me7, vr6 me7, volvo me7 , 1.8 NA etc . These have threads on them yet but they are nowhere near complete and yes I know this forum is american mostly, and many of those engines werent offered in the USA , however this is stil "the" ME7 forum. Just as an example.