Why did Brinks "mindlessly copy" an old defective padlock design?

Locksmith Bosnian Bill experienced deja vu upon seeing a new padlock offered in stores by Brinks. It looks awfully similar to a Master-brand padlock withdrawn from sale due to a critical flaw that makes it easy to spring open. And wouldn't you know, the same trick works!

It's advertised as "medium security," but all you need is a mini boxcutter and you're in.

"I can't believe it," Bill says. "The battle we won to tell everyone about this master, here we are again. Don't buy this even for your kid's tricycle. … Brinks, stay out of the lock business." [via]