I think it's a bold move for Google to present Perspectives as a new feature to improve user experience when really, it just makes it easier for them to present sponsored content in different formats. Astroturfed advertisments (fake "ordinary customer reviews," usually) have been a thing on social media for ages, especially on YouTube, and Perspectives is just giving Google a creative way to get eyeballs on those ads.

Using the Reddit implosion as a jumping off point is also clever, and I think it's evidence that Google doesn't plan on paying for API access next month, or ever. They don't want to take advantage of Reddit's data, they just want to take back the eyeballs that Reddit attracts.

(... not that Reddit was ever immune to astroturfing, of course, but I think strong community moderation made it better than YouTube, which doesn't give users much opportunity to get rid of fake reviews. Now that they have chased off a lot of mods and nerfed their tools, I expect the authenticity of Reddit product reviews to decrease dramatically).