Over the last decade, Discord has become the de facto community space for gaming, and there are a lot of huge servers out there that you can find by scrolling through its public servers page. But starting on November 16, some messages in these huge servers will be viewable from Google.
To be honest, one of the major drawbacks and reasons why I don’t like Discord is, that nothing is searchable with a search engine and its a proprietary closed environment. However, because it is that, and people posted stuff knowing its closed, it doesn’t make any sense to have an Opt Out index.
I like the idea of being indexed by search engines (hopefully other engines than Google too), but it has to be Opt In at this point.