The best part of the fediverse is that anyone can run their own server. The downside of this is that anyone can easily create hordes of fake accounts, as I will now demonstrate.
Fighting fake accounts is hard and most implementations do not currently have an effective way of filtering out fake accounts. I'm sure that the developers will step in if this becomes a bigger problem. Until then, remember that votes are just a number.
I always had 3 or 4 reddit accounts in use at once. One for commenting, one for porn, one for discussing drugs and one for pics that could be linked back to me (of my car for example) I also made a new commenting account like once a year so that if someone recognized me they wouldn't be able to find every comment I've ever written.
On lemmy I have just two now (other is for porn) but I'm probably going to make one or two more at some point
I have about 20 reddit accounts... I created/ switched account every few months when I used reddit