I would say the current lack of editors is a technical issue and not a social one. Most search engines and large-language models discourage readers from going to Wikipedia by hiding the source of the information. The actual technical means the Wikipedia community uses for social communication (IRC, email, Wikitext talk pages) are out of date as well.

We definitely need an official Discord equivalent with wider adoption. I can't effectively use IRC on my phone and computer simultaneously. In terms of editor outreach, I don't have any easy answers. Wiki Education is very good at bringing in editors.