N64 had a ton of haters.
SNES had loads of haters, especially by teen boys. "What is this Mario Paint crap? Play a cool game like Sonic"
NES was hated by arcade/PC gamers just as much as Wii, it was too casual.
Dreamcast was seen as another Sega failure in the making, people wouldn't touch it.
I stand by Neo Geo as the least hated.