Amazon et al should really make it possible for people to disaggregate their opinions on this kind of think. Lots of delivery companies are terrible but there's no ability to leave feedback ("driver threw parcel over fence") etc.
Tech support is also uniformly awful, and someone always winds up getting shipped a lemon and complains about bad tech support. Unless there's some kind of fundamental design flaw that led to the product failing, or truly common issue that is likely to affect me, I don't actually care. Someone always tries to install a brand new router and finds it won't even power on, then they call tech support and have a horrible time talking to someone in India who can't go off-script.