Most projects life because of huge support of few people. Pareto principle: 20% doing 80% of the work. And in my opinion on the most projects doing less then 10% more than 90% of the work.
I have an OS project too, people want 1000 things, you can say "ok, make a PR and it will be integrated", many make a good PR, but that's it. Normally they do not make any support, they made feature they need, and they are gone when it is implemented. (not all, but most people)
And when issues come up, because of the new feature, you can try to contact the creator, sometimes they help, sometimes not. But to contact them is work too.
I am so happy that i found a "community manager" (after years and many try it), who does all the non-programming stuff and keep the project alive, cause my time is spare too.