An interesting discovery / analysis.

There's a good chance that these accounts are just following the vote of one user.

The users could have handed over their posting keys to a group / curation initiative's (bot) or just have set their own bot to follow a particular user.

As you point out; something seems fishy about the response to this account's most recent comments, which don't seem to stand out enough as being so insightful or valuable that 120+ have liked all of them.

I think if we're going to grow the platform / keep users engaged then we need less of this sort of activity; that makes it feel like a privileged few are benefiting from someone gaming the system.