ehhh, I think if you watch the cppcon videos, you can get a taste of what the OP is talking about.

The cpp community is possibly the worst offender on some of the points. Speakers walking on eggshells and having to have a laundry list of caveats comes to mind.

It's more mature in the sense that you probably wont see a lot of memes, the insecurity and ego still permeate the venue and community.