"Hello I'm [generic person 2387362] and I'm the community manager for [generic corporation/tool/product 1892873]! I just started a few weeks ago and I'm so excited to announce that in the interest of [generic engagement and advertising], we'd started a discord server! We [positive transitive verb] our community, and want to bring them together so they can share some of the [productivity success stories] they've had or ask the community for support! Remember, while this is an official [generic corporation] channel, by joining this community you agree to [27 pages of legal terms about them owning your messages and data farming you]."

It’s normal to just meet people where they are at on all the various platforms. As long as you can pipe everything back to customer data platform increasing scale through multiple social platforms has almost no downside and pretty minimal cost.