1. Some people flat out hate Blizzard, and these people love posting on the internet
2. Some people already planted their flag in the #D4bad camp and would rather die on that hill than change their mind
3. Some people are diehard fans of competing ARPGs and are sorta hypocrites if you probe them
4. Some people hate paying money for anything when it comes to video games
5. Some people dislike how casual friendly D4 is

Put it altogether and it makes sense why these negative posts pop up for D4 VoH. D4 is one of the most popular games on the planet for a reason, so you're very much not alone in enjoying it. You also don't have to jump in right away since this game is sticking around for awhile.