It's like this everywhere, you'll always be initially met with circumspection. Passer-by contributions are not a help, helping out new contributors is a lot of effort that not every maintainer wants to deal with. You want to help, that's great, but you're not entitled to helping.
Gnome might be a club, but it's definitely not closed, you just need to put in the effort to show you're worth having around.
If you think there's a problem, you should report it.
Gotta stick around to find out.