Earlier quoted context omitted.
I feel like this comment was made in bad faith. Brave Rewards, the thing you're complaining about, is OPT-IN. That means you had to manually enable it in Brave's settings. You're complaining about something you consciously enabled.
https://support.brave.com/hc/en-us/articles/360027276731-Bra... This says it's opt out, not in.
If you mean the sponsored ads on the New Tab page, then yes they are indeed opt-out. But the person who I responded found the browser pop-ups annnoying. That is a part of Brave Rewards. The New Tab page ads are not a part of Brave Rewards unless you explicitly enable that in the settings (second section of the link you mentioned).