It’s hard to imagine which high karma person on LW would engage in individual persecution like that.
One can get sufficiently high karma rather easily. We are not necessarily speaking about the “top contributor” level here.
For example, if someone gets 10 karma points in a month, which is easy if they write regularly, they have 120 karma points in a year. If they don’t downvote regularly, and only decide to drop the whole bomb on one person, that’s 4×120 = 480 downvotes. Even if they spend half of it on regular downvoting, and the other half on a bomb, that’s still “hundreds” of downvotes.
One can get sufficiently high karma rather easily. We are not necessarily speaking about the “top contributor” level here.
For example, if someone gets 10 karma points in a month, which is easy if they write regularly, they have 120 karma points in a year. If they don’t downvote regularly, and only decide to drop the whole bomb on one person, that’s 4×120 = 480 downvotes. Even if they spend half of it on regular downvoting, and the other half on a bomb, that’s still “hundreds” of downvotes.