[danaris]

> There’s no silver bullet like avatar/name similarity or other forms of detection because the scammer can trivially iterate until they avoid automated detection.

That's a cop-out, though.

It's true that they're not going to be able to stop every single scammer, but that doesn't mean they can't raise the barrier to entry enough that a significant percentage of scammers find that it's no longer worth it.

As for the specific measures the GP suggested—those are absolutely things Google has the resources to do. Image and text similarity are things they deal with all the time, and if they can make it effectively impossible (barring occasional random false negatives) for scammers who attempt to impersonate the author using these methods to get through without a human double-checking, that would be a huge blow to their ability to fool people. It's not like if you're clever enough you can, say, have an avatar that shows one thing to the bot-check systems and another thing to users.