I mostly dislike how this is adding nothing new to Discord syncing subscriber status from Twitch or Patreon; doing that assigned the subscriber who connected their accounts a role, which could then be used for permissions to access content. This is all that a Discord Subscriber gets (role access to exclusive channels), besides "Premium Emotes", which is nebulous in value.

Discord are streamlining the process that wasn't particularly complicated to begin with. I'm imagining someone went "wait, why aren't we getting a piece of that pie?", and this is what they arrived at: make fans and communities need to choose where they put their subscription money to, and hope that enough people decide that Discord is the central venue they experience a community.

For Twitch streamers, this might not be as successful as they'd like it to be, if there's more value associated with being a Twitch sub than a Discord sub. Streamers really need to be leaning hard on a Discord-specific product in order to justify a second (or well, primary) subscription, and I don't see a ton of people doing that.