Yeah, I am just speaking as a general principle - not whatever happened here. Mass downvoting isn't at all observed like that anyway. It's the behaviour from some individual accounts that repeatedly downvote different threads from a specific community. So you'd be looking at habits across threads.

If in my community (for instance) someone was to come in and just downvote the entire first page, I'd probably ban them because that would just be a crude attempt to target it. And again: downvoting like that is worse for smaller communities trying to grow.