I can't comment on a theoretical scenario with respect to Quebec, but I can confirm two things.
First of all, based on the amendments to the bill that have already been adopted by the committee with respect to Canadian children born abroad, meaning outside of Canada, the second and subsequent generations would have access to citizenship provided that the Canadian parent meets the connection criterion established by the committee. The member could apply this consideration to a scenario.
Secondly, the amendment currently being discussed would not affect this cohort, which would benefit from new provisions, because there wouldn't be a ceremony for them. They would automatically become Canadian citizens. Those born abroad, meaning outside of Canada, would not need to take part in a citizenship ceremony.