The worst switches I've ever used would probably be various 'Cisco' switches from their small business line, usually ones that ran the same OS used when they were sold under different names like 3Com or Linksys.

oh god, when I worked for a small telecom in the midwest they heavily used the 3Com switches. They were the bane of my existance, things would power loop, or my favorite, continue to work but prevent any sort of access to them.

> It’s not all blue crap off Amazon.

To be honest, those little blue unmanaged Netgear switches aren’t bad at all. We have dozens of them in our lab at work running 24/7 for like decades and have never had a failure that I remember.

They aren’t terrible as long as you have a supply of wall warts available. I ended up powering mine off a little Meanwell switching supply in the end as they don’t blow up as often.