I’d suggest that, if there’s a topic over on reddit that has topics you’re interested in, try starting a thread over here on that topic, even if the community here is “dead”. Because “dead” communities can be resurrected, they just need activity. Asking a question on a topic is activity; posting an answer to the question (even if it’s your own question and you had to go to reddit for the answer) is activity and provides a resource here for other people to use. And if it’s something you found out on your own but it’s not new, try posting a YSK or TIL in the appropriate local community. You may not get replies, but we’re not going to become a fully viable alternative unless people contribute little bits where they can.