They changed the algorithm on Dec 7, 2016.
Before: https://web.archive.org/web/20161206000344/https://www.reddit.com/
After: https://web.archive.org/web/20161208000333/https://www.reddit.com/
Best guess, based off the vote count differences of those two days, is that if you see a vote with 100,000 count, it’s likely closer to 20,000 count (divide by roughly 5 or so).
There was a post about it by KeyserSosa on Dec 6, so it’s not some conspiracy or anything.
I figured YSK.
I think the given reason was to prevent vote manipulation by fuzzing the counts or something like that, but I always to took it as the admins and supermods cherry pick which posts they want to promote and alter the counts, so basically pushing certain messages and politicking.
True and seeing it happen once (the famous one) makes it likely.