They don't typically care about client mods as far as I can tell, the use case they ban accounts for is using a third party client entirely.
That being said I don't think slack/discord should be a thing for open source communities.
That being said I don't think slack/discord should be a thing for open source communities.
So far (to my knowledge) discord hasn't made any effort to prevent modding of its official client. Most people just do it to inject css etc.