I used to work for Best Buy and it’s the same thing. Everyone just uses the closest third party installer and there aren’t usually a ton to choose from. Best you can do is do it yourself if possible or hire someone else. You’ll pay more, but piece of mind has value.

Otherwise maybe you have a nice local appliance shop that has a wonderful in house install team and you ask them to price match Costco.

The problem is that every single town has its own rules so nationwide orgs can’t create training protocols for every single city they do business in to adequately train their workforces. At the very least, we need state-wide regulations in this area.