I've seen this as a teaching assistant. CS class size went from a few 10s to over a 100 in 1999-2001, then dropped again when the gold chasers went somewhere else.
I did not find the boom period as bad as I expected. Many of the students in it for the money were still very smart and motivated and interesting to talk to. But I preferred the non-boom periods nonetheless :)
> Many of the students in it for the money were still very smart and motivated and interesting to talk to.
It is because people are not one dimensional. Most people have talent for range of professions, they are not predisposed to like exactly one of them. Also, most good students will end up liking whatever they picked provided it is within range of things they are not completely failing at.
Learning something often makes one like it more, even if one was initially ambivalent. Plus, once you know a bit more about field, you can find sub-field you are actually good at and find fun. As in, various tech jobs require slightly different aptitudes - some require more patience, some more abstract thinking, others memory. But, you dont know until you try.
As a student starting at that time, it was actually very frustrating. Universities hadn't caught up on having enough lecturers/TAs (or they hired a lot of TAs but they were very inexperienced and your odds of getting a good one were not good). Class sizes soaring also meant reduced time with instructors in office hours, and reduced opportunities for working with researchers (that is, a decent but average student had a shot before, but suddenly had none due to the glut of candidates).
The TA thing is pretty normal. I'm a TA this term as my new funding is being being worked out because it takes 6 months to do. So I'm TAing a class on assembly which I have no experience and don't even have a CS undergraduate degree. It sucks for us too as a have one class that expects 30hrs/wk of work (+another class), my research (what I want to spend all my time on), and TAing takes 18hrs/wk.
You're only going to get a good TA when that professor is teaching a class that's their focus and has a grad student that has that fucus AND that student isn't on other research funding. The system is far from optional for either undergrads or grads. Believe me, I'm not happy either
I did not find the boom period as bad as I expected. Many of the students in it for the money were still very smart and motivated and interesting to talk to. But I preferred the non-boom periods nonetheless :)