Would you rate your youth bike light as good?
It's all relative, that's all I'm saying. Yes, in my youth, my ~13 lumen bike light was quite good. Just as good as what most other people used.
There's much better options today, for sure. But that doesn't make something that was quite adequate before, suddenly useless.
Everyone loves playing the lumen game, now. But sometimes, what used to be good is still good. You just won't be the envy of the Jones' family that uses 500 lumen lights.
There's also something to be said for using only enough light as you need. One of the problems I face is when I'm out walking (or sometimes biking), I start out on a low-light setting. Every time I hear a noise or want to see something more clearly, I turn up the light a notch to check it out. Then my eyes lose some dark-adaptation, and my new baseline setting for my light is brighter. Eventually, my flashlight is turned up many times brighter than I started with, but I'm not seeing any better with it.
In a dark area with dark-adapted eyes, 13 lumens is actually quite bright. In an area that isn't very dark (suburbs or city), you don't need any light at all, so a bike light is only used as a location device anyway.
Given a choice, I'd take a 500 lumen light over a 13 lumen light, for sure. I'm just not convinced it would allow me to see that much better.