This is a serious stretch. The algo didn’t force that person to sign up and post their every ignorant thought on a public forum. People can just put down their phones but they love the attention. Individuals are just as guilty for giving power over themselves to social media.
To make an old-world analogue, in 1980 for someone to be held to account for an objectionable view, it probably would have involved some journalist making the decision to write a story about the comments which someone made. That human component in deciding what is newsworthy has been replaced by a machine in some cases.
Another example would be dating apps. Now we have algorithms which make decisions about which parts of the dating pool an individual will have access to. In a real sense, non-human intelligence is playing some role in who gets to pass on their genes to the next generation, and with whom.
I'm not saying that our lives are ruled by machines, but they're not completely not governed by machines either.
I'm kind of surprised that aliases have not widely taken off already. But I suppose the consequences are not very severe yet.
The funny thing is that these aliases already existed, but we've largely eschewed them for our "real" identities. Prior to probably Facebook I think every interaction I had with other people online was behind a screen name detached from my real world identity.
For instance, there are cases you can point to where some normal person on Twitter with a couple dozen followers posted the wrong thing, it blew up into an international story, and they eventually got fired from their real-world job for it. Who made the decision that this person's views should be widely scrutinized? In a lot of cases it was the algorithm: for whatever reason that tweet drew engagement, so a massive spotlight was put on this mostly-private individual.
In a real way that's an example of an AI system deciding to take away someone's livelihood.