There’s a natural connection between the two: you need qualified people to teach students and many of the best students are looking for research experience in labs doing real work. Given what tuition runs these days, any place which doesn’t have those is going to see students passing for other institutions.
The problem isn’t pairing the two but generations of overhead growth combined with a decline in the federal funding which used to support researchers, both of which mean compensation has fallen behind in real value.
Researchers are extremely unqualified to be teachers. That's because researchers are good at researching.
And this skill has very little overlap with teaching undergraduate students.
And on the other end, a fairly small percentage of students end up doing any research in college.
In an ideal world, researchers would research, and people who specialize in teaching would teach.
You do NOT have to be some cutting edge leader in your field to teach undergrads. Simple skills, like being an engaged and interesting speaking are way way way more important than how many papers you've published.
In my opinion and experience, the process of teaching itself makes you a much better researcher. People can get bored doing research, epecially if it is primarily solo research. Plus, teaching forces you to learn a subject much more thoroughly than you would otherwise. And if you want to expand your research to a slightly different topic, teaching that topic can give you a lot of knowledge and confidence in that topic. I feel like teaching+research institutions do better research than pure research institutions.
My point is the research and teaching are orthogonal skills.
It is certainly possible for someone to be both a good researcher and a good teacher.
I am just saying that I don't care how good of a researcher they are. The only thing I care about is how good of a teacher they are.
So let's judge the teachers based SOLELY on their teaching skills, and not have writing papers have anything at all to do with whether they are hired as a teacher.
That research and undergraduate education are combined together is the real problem here.