Definitely, though some of the AoC challenges are pretty mathy too, or at least benefit from some basic knowledge around combinatorics, factoring, etc.

Or contribute to Hacktober fest.

Or meet fellow devs at meetups and get into open source.

Or meet people at a local hacker space.

Basically, developing requires people to inject interesting projects and perspectives at you.

Yes. Coding requires social skills. I'm not taking that back.

They seem to be interested in short-form programming puzzles, I don't really see how your comment applies to that.

I don't know why you've decide to compare these things and get immediately hostile about it.

Eh, not a lot of hacker spaces here in Silicon Valley. Don't know about the state of affairs in OP's location.