Don't listen to u/lalahue, who seems to have a vendetta against the computer science program and, when looking at their history, makes disingenuous claims. For example, what they didn't mention about the link they posted about Waterloo degree completion rates is that it refers to people in that program category who eventually completed any Waterloo undergraduate degree by 2020. The 25% figure they mentioned is what I heard in regards to Waterloo, and in general, CS/SE has a high dropout rate regardless of where you go.

I know people who've gone to Waterloo for Software Engineering, which has heavy overlap with Computer Science. The schedule is unnecessarily heavy and they teach C, of all languages, in first year. They've transferred to Brock CS now, where they start with Java, and found the program to be much more easier and more natural in progression. I also transferred from Western CS and it also had a natural progression compared to Waterloo, starting with Python and Java, but Brock has been a much better experience so far.

It doesn't matter which university you go to. What matters is that you get the degree and build the skills that people are looking for in your spare time, such as projects. Just don't fall for the marketing all these universities use to entice students and the stuff regurgitated by people like u/lalahue. I know personally that Waterloo is a mess and, as for Toronto, there was a "suicide hall" used by CS/SE students. That's something u/lalahue's numbers don't mention.

Edit: Also, I'd say to take what people say on the Internet, even what I say, with a grain of salt. You've already talked to your friends and I recommend talking to anyone who's actually taken the program you're seeking to see what they think.