Adding scattered bike lanes in a haphazard way is insufficient. You need a network of physically separated bike lanes that connects an entire city. Any gap in the network makes it so the bike lanes might as well not exist, if you go from a nice ride to being in mixed traffic. Physical separation is also critical, because between the lack of enforcement of blocked bike lanes in most locales and the apathy of drivers that have no qualms blocking them, if you don't make it physically impossible to park on them, people will park on them, rendering them useless.

Well the problem is that you need a cycling network and even the most cycling friendly of North American cities often don't have that.

So the common problem that holds back many cities is that you might have one or two AAA bike lanes, but then after that you're thrown back into the dangerous mix of traffic again.

Accordingly cycling growth will be limited outside of the narrow corridors where the best AAA bike lanes exist.

If they are more than just a line on the road and are actually safe to use, they are probably not as empty as they seem. Because bikes take up much less space and don't tend to bunch up as much like cars, it can seem like there must be a lot less bikes than there actually are. 30 cars over the course of 5 minutes are very noticeable and seem like high traffic. 10 bikes over 5 minutes seem like almost nobody, but the bike lane would then be moving a third as much people as all the car lanes combined.

I don't know where you're referring to specifically, but a common thing I've seen is that cities will make some set of roads bikeable (usually roads they were repaving/redesigning anyway) but they're not really connected in a sensible way. It makes biking on the improved roads nicer, but most practical trips will still involve other roads which might be more dangerous, scary, or difficult.

The bike paths have to be useful of course. You can make a nice bike path to nowhere and no one will use it because there's nowhere to go there. Even if it's Lime scooters or whatever using the bike paths, still an improvement.

Driving a car in Paris is also a nightmare so there's that additional motivator there.

This has not been done in a single US city. We only have patchwork networks, and a patchwork network of safe infrastructure is by definition unsafe infrastructure.

You need to provide evidence and context.