I've been using 8 10TB Iron Wolf's in a ZFS raidz2 for over 2 years now with no issue. I wouldn't call them loud either. My whole rack sits in my living room and I never heard the drives make a sound.
I think seagate in general gets a bad rap. I've always used them at home and never had problems, but maybe I am lucky.
Also choosing a used HGST from ebay over a new Seagate from a reputable vendor? That seems sketchy to me..