The city started during the pandemic and has moved toward making these bike lanes more permanent. There is also a deep dissatisfaction with public transportation here. While comprehensive throughout the entirety of the Paris metropolitan, it is expensive, unreliable (especially the regional RER trains that connect the inner city to suburbs and vital for commuters), often filthy, and at times unsafe (depending on the line). The other issue is the traffic above ground. I've heard reports that there are fewer cars, but it doesn't feel this way. If anything, there are more delivery trucks.
So while infrastructure investment has helped (not to mention some nice tax write-offs and discounts on e-bikes), there are some other issues here. I like bikeable Paris a lot, but the ecological goals of this city's mayor demand much more investment in the city and regional authority's mass transit. It is unreasonable to expect commuters to bike in from many kilometers away. Biking inside Paris upon arrival should be the desired end result. Ultimately to get the cars off the roads, people need to feel good on mass transit so that they want to use it more than a car, and the impression I have right now is that many people are biking because it's better than sweating in filthy, delayed trains.
To that effect, riding a bike is and should be a delight -- not a mere alternative to defunct metro transit, but I know many who are terrorized or disgruntledby biking in Paris. To solve this intractable issue of getting more riders, cars have to be removed from the streets which need to be progressively closed to make room for more bike infrastructure. These kinds of plans well face strident criticism and backlash from the suburbanite commuters. In that vein, I am totally for the Grand Paris Express plan. Make Paris great for Parisians again!
https://en.wikipedia.org/wiki/Grand_Paris_Express