Well, at least in my experience they do come up with some ideas that are genuinely about making the user experience better (to increase retention/sales/etc. of course). Like the idea about doing away with or simplifying passwords somehow. It's an idea with good intentions and if it could work perfectly it would be _awesome_. But it doesn't work perfectly -- there are major drawbacks. The sales and marketing folks just don't understand that part of the equation.
I don't mind that kind of mistakes that much. Well, they don't understand the security implications, maybe they didn't listen to someone when they should have. Yes, sometimes it's a fuckup, but intentions were at least honest. As strongly as I hate scumbag marketers and sales, I strongly (and publicly) applaud those who have good intentions and are aiming for a win-win.
But here, in this particular case, you clearly have bad intentions with a side order of criminal negligence.