Well, what it should teach you is that to think purely in terms of SEO can often result in poor design for the user.
As much cosmetic work and functionality needs to go into a website as engineering for the search engines.
A 250 GTO has 4 wheels, an engine and a steering wheel.
So does a Trabant.
To a search engine, both are "cars" and both will take you from A to B.
Which one, as a user, would you prefer to drive?