Mostly because the author completely scammed the shit out of people by promising a ton of things to garner patreon support before open sourcing what was essentially a hobby project at the time. I haven't followed it very closely, but last I heard about it was not delivering on the "autofree" feature.

I dont really care about the language. I've tried it a couple times and it's nothing special (to me) so I moved on, but I definitely understand where the hate comes from. The author essentially lied for at least months about his project to get financial support.

Quick edit: to actually add to the discussion, I think the weirdest thing about V is the odd support it does get. Most projects, especially compilers, with as much controversy as V would never get any support. I'm very curious what its proponents are using it for and why they choose V over pretty much any other language.