Yeah, I'm not sure it would work the same as current SEO spam, but I just feel like some portion of this idea is predicated on mis-aligning incentives. Right now, SEO has no incentive to go after Reddit comments, so Reddit comments are (apparently) higher quality than raw search results. But once search engines start directing people to Reddit comments, the SEO's incentives shift, and it feels like their behavior would change accordingly (although I admit I can't articulate a clear vision of what that new behavior would be), causing the reliability of Reddit comments to plummet.

Maybe it's true that Reddit's moderation is sufficient to prevent this from happening, but I feel like I see a decent amount of SEO-adjacent subreddits already, for things like new crypto pump-and-dumps. Before Reddit removed nsfw subs from r/all, you'd sometimes see a bunch of spam links for OnlyFans sites.

I could imagine a situation where Brave has to try to distinguish good subreddits from bad subreddits and it becomes just as challenging as distinguishing good websites from bad websites.