Genericons is an old project, built for a simpler time. It still exists here for back compatibility, and is open to PRs.

However you might want to consider Genericons Neue, a refreshed and modernized version of Genericons. It's visually more coherent, it's much slimmer with only the most necessary icons, and it's built using npm.

Or if you need logos or icons for your favorite social network, Social Logos, which probably has the one you need, and is open to suggestions.

Genericons Neue and Social Logos are where the bulk of energy will be spent going forward.