I don't see the need to be suspicious of the quality of the education provided at most colleges and universities. An accredited college or university has passed some rigorous tests in order to achieve that standard. There are some professors that seem to cater to a small subset of students in their classes (play favorites) and then they don't bother helping the rest of the students grasp the subject. However, I think overall, if you attend an accredited school you will receive a decent education as long as you put the time and effort in.
If you want to put this in terms of employment, I wouldn't say the problem is that the education at colleges and universities is of low quality. Some in the business community may want to say that the education received at a college or university 'x' decades ago is superior to an education that students receive today. However, what seems to be the reality is that many large companies want cheap labor in 2nd or 3rd world countries and also that many companies big or small seem to be unwilling to train people and thus will not want a new graduate because they don't have the experience they want (3-5 years, 5-7 years, other ranges). So then you have people making claims that students today are not obtaining a good education or they don't have the right skills etcetera, etcetera.
Overall, I don't see why it is reasonable to be suspicious of the education provided at accredited colleges or universities.
I question why extended education institutions make someone take classes that have nothing to do with the degree/job they are going after. I've heard many stories of math teachers having to take multiple English classes and other such classes that have nothing whatsoever to do with their degree/future job. I sometimes think colleges do that just to get more money out of people.
If the university happens to teach that, for example, global warming is a real threat to mankind. I would have to say that since 99% of scientists agree and nearly the rest say "possibly," I would recognize the fact that I am attending that university because I am not as educated as them and have no proof or credibility to deny claims. However, if we are talking about Liberty University in Virginia, which claims that the Earth is 6,000 yrs old, I would recognize that 99% of scientists disagree and would wonder how they ever became accredited.
I guess you have never taken a science class. Believe it or not, they have a lecture then you go into the laboratory and do experiments that demonstrate the concepts discussed in the lecture. Amazing, innit?