I used to bike like this when I was a teenager, and I try not to now. If someone was in the crosswalk, I’d slightly adjust my speed and path to pass behind or in front of them as space allowed, just like they were any other obstacle. Because I didn’t realize how unpleasant it feels to be startled by a bike going past, or even if you know they’re coming it’s still uncomfortable that they’re going fast.

As a biker it took me a lot of life experience to realize that even if the situation was perfectly safe (I’ve always been in control and never hit anyone), pedestrians are not unreasonable for disliking bikes riding fast in their personal space.

But in a lot of countries, bikes have to be like pedestrians sometimes because the bike infrastructure is so spotty or non-existant. You’ll try to use the bike path but it just ends. Or there’s so safe way to turn left, or whatever.

But in other places, like Berlin, Germany, old people will yell at you if you’re biking in the wrong place and it’s pretty great because there’s usually a good bike path right there that you could be using.

PS. In my walking experience, bikes are way more likely to see me if I’m crossing a crosswalk than cars. Sometimes cars drive right through when you’re waiting to cross, where a biker will usually acknowledge me and let me cross.