If you are a business that buys used electronics, it's a business imperative for you to ensure that the sellers unlock things before they're sold to you. If you don't take this on, this is kind of a self-own. There's really only two ways to look at this if you end up with a bunch of locked devices:

1. You buy and traffic in stolen goods, you're a fence. Good thing you got fucked.

2. You don't do a good job of operationalizing your core business, and ensuring that sellers unlock devices before handing them over. Good, you suck at business and those that don't should rise to the top.

I don't see how any of this is a negative, except the environmental impact at the end, which considering most of this is aluminum and recyclable, is minimized and an acceptable trade-offs for the massive anti-theft and data protection benefits.