In many companies source code for all products is available to each and single developer.

In what world does all this data in the leak would be stored together in a unified ecosystem? It makes absolutely no sense.

If you're saying that Twitch runs their developer environment in a lousy manner (and you have proof of this), then please go ahead.

But to imply that an intern/average developer would be given access to all this branching information is ignorant.

I think many people are trying to say that in this world at many companies all that data is indeed stored and accessed together.

Maybe the super secure siloed world doesn't really exist outside of military/government organizations.

I have first hand info, and this is how it’s done. Don’t call somebody ignorant if you don’t have first hand info. Leave that for somebody who does.

>Why would an intern have access to this data?

monorepos are a thing at several companies (e.g. Google).

Monorepos can and often do have ACLs per directory.