I'm not sure, and I suppose it largely depends on what the results are for different actions. On Reddit, posts and comments that get upvoted get more views and

I'm not sure, and I suppose it largely depends on what the results are for different actions. On Reddit, posts and comments that get upvoted get more views and engagement because the entire site is more or less stack-ranked on /r/all, /r/popular, and any given user's home feed. Downvoted posts and comments get sent straight to the bottom, and really don't get seen or engaged with. Hearts, retweets, replies, etc. on Twitter I presume have a slightly similar result but I suspect it's not the same as "reaching #1 on /r/all" on reddit. The way Twitter works is fundamentally different. So whether Twitter really needs to care about people "getting ratio'd" or buying likes is different than the concern on Reddit. What happens to mass-downvoted tweets will determine how important it is to make sure all downvotes are "real" or "in good faith" or whatever.