That isn’t gaming the system. That means they if someone follows mostly far right accounts, they’ll see the ads show up next to far right content.
If they make no effort to deprioritize Nazi content or treat it differently, then ads will run with that content. They have to purposely sandbag that content so it doesn’t appear.
Honestly, the methodology here just confirms the argument. If someone is following mostly Nazis, they’ll be suggested content that is mostly Nazis, and ads are going to run alongside it. I suspect that’s not a negligible share of the accounts.