I don't think anyone says that. I've often heard people who wanted to paint an optimistic picture of the situation say it, but that's not the problem. The problem is that language transfers have been hugely and disproportionately towards English.
Let's talk about the language used at home.
The anglicization or assimilation process is insidious. People are steadily using more English than French at home, and the situation is changing gradually. According to the indicator for French as the main language spoken at home, French is in decline. The Statistics Canada projections on language used at home, as illustrated in scenario 8, show that the percentage of francophones could drop from 81.6% in 2011 to 73.6% in 2036.
Do you agree with these Statistics Canada projections?