But is it normal for France to print currency for 14 African nations on which it applies banking seigniorage ? Politiek en overheid

?

https://www.dw.com/en/why-africa-prints-money-in-europe/a-61246672

It is not normal. It shows that they are not independent at all.

in principle, this is normal if it is done not by the state, but by private printing presses.