I'll start, and Gigi may want to comment.
They don't impact the viability of the act in that it's still the case that a very large portion of health care spending in Canada goes to hospital and physician services. They are, obviously, governed by the conditions and criteria of the act.
I think it is the case that the result of the Canada Health Act's focus on physician and hospital services does mean that across the country other services, such as the ones you've mentioned and many others, are either not covered at all, or if covered, are covered in different ways in different parts of the country. The good news is that in many provinces they've evolved to pretty much the same level of development, so a lot of these services are covered in some manner or another. Drug coverage is clearly an issue, as well as access to other services in the community, for example, home care.
The fact that there are differences across the country is an issue of concern, even if provincial and territorial funding in these areas is quite robust. At this point, that is simply the state of play across the country.