Given there's very clear monetary incentive for the company to hype their own product, and that these stats can't be externally verified [1], this is essentially just snake oil. Personally, if anything, I find the constant forced hype across media and social media to be a red flag. If your product was really both good and honest, you wouldn't need to try to force it down people's throats.

[1] https://community.brave.com/t/why-doesnt-brave-market-share-...