Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Absent this rule, we surely would be deluged with "stealth spam" questions intended to raise the profile of a product, e.g.: {Q: "Does $SNAKE_OIL have $FEATURE to solve $PROBLEM?", A1: "Yes, it has the best $FEATURE ever and it works even better in version 3.6!", A2: "I had so many $PROBLEMs until I discovered $SNAKE_OIL and $FEATURE solved them all!"}
I personally don't think that logging in with an OpenID (e.g. my Google account) wastes any time at all. It's practically effortless. As a matter of fact, StackExchange is one of very few online entities that handle logins in a way that I like.
