Sorry about the lack of a response, but I guess it scrolled by without me noticing.

A map projection is a mathematical trick used to take a representation of the surface of a sphere and flatten it out so that you can put it onto a flat piece of paper. Every map projection has some kind of distortion inherent to the process, so that kind of distortion will affect how things look in different places in the world. If you have a flat world instead of a spherical one, then the concept of a map projection doesn't really matter.

To get an idea of how different things look at different scales, go to the satellite view on something like Google earth and zoom out to where you can see a whole continent. Look at how the mountains appear at that scale. Then zoom in until the map is a few tens of miles or so across and look at the appearance of the mountains again. The amount of detail that you are showing here is more characteristic of the zoomed-in map than the zoomed-out map. It's recognizable, but it's an unfamiliar representation for mountains in my experience.

The "screening" done by inserting the vertical blank lines is fairly distracting close up for me, but I am pretty sensitive to excess high-frequency noise as is caused by that kind of effect. I suspect that your goal might be to use that white space for some sort of additional terrain shading that would probably smooth it out a little, which might be interesting.

So... Yes, they are recognizable as mountains. I find them a little distracting at the most detailed level, but they are fine above that. How well they will work in the long run depends largely on your vision for how the map will be used and for what you intend to do with it.