As soon as I got a bike path near my home that led to my grocery store, I stopped driving to the grocery store. This only happened when two bike routes were linked together, since I live off an arterial street. You either have to be willing to put in a huge stretch of bike lanes all over, all at once, or be willing to put up with a few stretches of underutilized bike lane until enough are added that they become usable. With your mindset, you could never go from no bike support to having bike supporting infrastructure.

Ah yes, the ol' "this project is stupid because it isn't finished yet" argument. 🙄

By the way:

and then are inevitably lucky if you see anyone using them.

That's often not because they aren't being used; it's because bike lanes have 2-3x the capacity of general-purpose lanes. They look a lot less busy even when they're carrying the same number of vehicles.