The former architect of Notre Dame gave an interview to this effect on French TV.
But I have seen nothing about any official results of the arson investigation.
I doubt they can finish it in five years.
And, it has to be rebuilt with the love and devotion of the workers, to be the same.
If French law prevails, and requires a large percentage of the workforce to be “immigrants” (ie, mostly North African muslims), then you can expect a repeat of the earlier fire, imho...