Mostly, yes, especially as an undergrad. A science forms and tests hypotheses, usually about natural phenomena. I only had a few classes in CS where we tested any hypotheses or performed any real experiments. Most of it was design and learn by rote, and not experimentation.
Theoretic Computer Science is pretty sciencey but is testing things engineers built and often testing using math rather than experiment. Algorithms and data structures use the result of some science, but don’t teach or perform much science normally. Graphics involves a lot of cross-discipline physics and math, but in practice is teaching techniques and APIs, and doing very little scientific experimentation.
Machine learning may be bringing more science into computer science. People are certainly running lots of experiments in ML today trying to figure out how neural networks behave. A lot of it is still engineering too, of course, but there is some science in there.
But, I think it would be good to include more philosophy of science - what does it mean to do science - at the undergrad level.
I do agree that none of them are doing science, but one is studying science itself, the other is studying a slightly different thing.