Official statement from Valve.
We shared with the NYAG that these types of boxes in our games are widely used, not just in video games but in the tangible world as well, where generations have grown up opening baseball card packs and blind boxes and bags, and then trading and selling the items they receive.
You’re right! We should stop that too!
It also might not be exactly what NY is asking for, even if that’s how Valve would like to frame it. The actual ask might be to just stop profiting from gambling.