"Paris" wanted this. They went through a lengthy and arduous application procedure to be considered as a host city.
French population and Parisians didn't have a word about it.
The Paris bid was submitted in 2015, and remained the only one in 2017 (a few cities pulled out in 2016-2017, the last one in February 2017), getting officially ratified in September 2017.
Macron was elected in May 2017, two years after the Parisian bid was submitted, and months after it remained the only one.