True, but there are other benefits too. Bots can’t crawl through your likes for example. Maybe you want a feature on lemmy or mastodon or whatever with anonymous polling? Maybe you’re implementing anonymous polling into an app for a trade union that needs total anonymity even from admins? It’s not totally unusual!

IMO it makes sense to do this at a platform level just because there’s a unified implementation of obfuscation across all the fediverse for any platforms that want to use, rather than a bunch of unique solutions that would be duplicated effort.