The problem is that people downvote from c/all, just because Joe Blow doesn't like it, so content is buried that that specific community would like.

Hence, in the original comment, what seems to be your average straight guy seeing cocks and gay stuff will downvote, whereas people that subscribe to that community would enjoy it. I have niches that your average dude finds weird too, and I don't want stuff I would like to be buried just because MOST people don't want to see it.

Sure you can bring up that they should mute those communities, but everyone knows people just j/o and scroll and don't bother doing anything other than one-tap or click feedback.

So limiting the downvote to people subscribed to that community makes a lot more sense. It makes sense overall now that I think about it. There is stuff I would downvote on my regular account if it's posted in the wrong place that I would upvote if it was in the right place.