I used RR at Uni in the early 2000s. It felt very clunky even then. It was also a pig to use - somewhere along the line it become known as Crashional Rose.
And then for this to be held up as the example of how software engineering was going to be in the future is just icing on the cake.
I have many and sundry quibbles with various things I was taught in university ~20 years ago, but most of them I at least understand where they were coming from and some of them have simply been superceded, of course. But that software engineering course with Rational Rose has the distinction that, in hindsight, I don't think I agree with a single thing they taught.