Cataract surgery is not urgent. In Canada, they ration by need, not the ability to pay. It's also a problem that is not generally characteristic of health care systems. Overall health outcomes are better by the vast majority of metrics.

Even if you have good insurance, wait times can be bad. For a point of reference, someone close to me had a potentially fatal condition and wasn't able to get a specialist appointment for 4 months. That sort of thing isn't uncommon.