> frequently opening boxes, but not constantly.

If you are frequently opening boxes, that spring-loaded mechanism is going to cause repetitive stress injuries. No competent workplace health and safety employee would approve it.

Also, if you are using a utility knife frequently, you likely have a depth you want to keep it. Say I’m installing carpeting. I want to set the razor at a depth for the shag of carpet I’m working on today and have my blade at that depth until I’m done. With a spring load, the only depth that can easily be set is fully out where I’m pushing it all the way. Any intermediate depths will result in me shaking back and forth trying to hold a constant intermediate pressure.

This is a utility knife for someone rich who uses it for the day’s amazons packages because they think using the blade from their scissors is beneath them.

Maybe frequently was the wrong word; I would think spring-loaded would be designed for a lot of cycling between quick cuts and some other tasks, and you didn't want to leave the blade open.

Fixed blade would be best if you were constantly opening boxes and/or you could set your knife down open. And yes, for doing tasks where you are doing longer or more strenuous cutting (carpet is a great example.)

They money is fun to grouse about, but I thought the complaint about the low utility was the interesting bit.