Have worked in QC. You make a good point. There’s a lot of bandwagoning via producing fairly trivial libraries. To get into QC, to understand what’s going on, you’re better to learn a bit of linear algebra and follow some introductory lecture. IMO this effort is worth it to discover how quantum error correction works, because it really is quite mind blowing when the penny first drops... perhaps only recursion also had that effect on me.