It goes without saying that it's impossible to access the site to verify the status of your application online without an acknowledgement of receipt. IRCC can't confirm whether the application is complete. Consider the example of a man who got his CSQ in July 2018 and submitted his permanent residence application in July 2019. The CSQ expired in July 2020 because it was valid for two years. If he hasn't received an acknowledgement of receipt, he doesn't know whether his file is complete. If IRCC returns his file the next day, his CSQ is no longer even valid.
We met with people from Quebec's Ministère de l'Immigration, de la Francisation et de l'Intégration, and we told them that the CSQs should really be extended. People who wait for an acknowledgement of receipt must be assured that their CSQ will remain valid.
No one really knows what the story is with access to the Régie de l'assurance-maladie, the RAMQ, and health care. For example, some people in our group had access to the RAMQ simply via their CSQ. However, others, including me, were told we had to have a closed work visa to access the RAMQ.
It would be good if the Quebec government could announce rules respecting what we are and aren't entitled to.