My answer is no, even though that may be the case in small communities.
Think of a family that wants to choose a French-language school as a rights holder. If there is no French-language school in or around the neighbourhood, those people could choose a school that's nearby, that's part of an English school board and offers a French immersion program.
For our part, we insist on the fact that these are really two paths. Our organization is called “Canadian Parents for French”, not “Canadian Parents for French immersion”. When we advise parents, we recommend that they seek the best possible quality of French. If people are rights holders, we suggest that they opt for the French-language program, but, if not, we recommend the best possible French program for them, which is immersion.
The problem in small communities is that some rights holders haven't had the opportunity to use French and have a natural mastery of it. That may be a challenge that needs to be addressed through francization.