In my opinion it gets a bad rap because its sampling flow is quite different to most other samplers and dare i say it, not particularly intuitive from looking at the UI. That added with the manual not quickly explaining how to sample (at least in my experience) i suspect that leads a lot of people to youtube to get up and running, where they are inevitably told not to be scared of the big confusing machine.
Once you know how the flow works, its super quick, but unlike a lot of devices its not something that is easily approached by looking at the UI and guessing.