You mean 3 credit hour courses on decorating a Home Room Bulletin Board aren't as rigorous as Relativistic Physics? Classes on games you can play with a kick-ball aren't as difficult as Differential Equations, Organic Chemistry, or Statistics?
I will gladly compare my EASIEST required course to the most difficult Education degree required course. To say that they are less 'rigorous' is like saying the ocean is wet.
I've got an Electrical Engineering Degree (have taken the courses that you mentioned, EXCEPT Organic Chem....shudder....). I've got 20+ years in IT, and can design an Fortune 500 Companies' enterprise-class infrastructure from scratch.
Per The Current Educational System, I'm completely unqualified to teach a basic computer skills class to 8-year-olds.
Therein lies the problem. Too many "Education" majors, and not enough people who actually understand what they're teaching.