But if you're looking for new techniques, outdated material is useless.
Pat's book covers the basics, there is nothing "outdated" in it.
You might personally be beyond the skill level of the person that the book is aimed at, but that doesn't make the book outdated. It is what it is, a good solid overview of the basics of building and detailing model cars... just like the title says.
If you are a gourmet chef, that doesn't make a basic cookbook "outdated." it just means that particular cookbook is of no interest to you. But there are plenty of people just starting out cooking who could really use a cookbook that covers the basics.
Know what I mean?