Well, this problem exists not only on ok zoomer. Now it's clear, thanks for the answer

Hello! What you are seeing here is unfortunately a side-effect of how Minecraft renders things. You see, there are 3 dimensions, depth is one of them, and everything is inside those dimensions with a certain level of precision. Due to how things work on OpenGL, the tendency is that everything in the middle will have extra precision while far things will become less precise. Outside of OpenGL, the tendency is just that near things are more precise than far things, which is still bad!

This, however, can be addressed by a technique called Reverse Z, where both far and near things have equal precision thanks to tricky shenanigans that fits better to the way things are rendered. Unfortunately, Minecraft does not implement this, but it would be the perfect job for a mod to tackle this. This may likely break modded things though! But the result would be extra precision that would fix zooming far.

So, yeah, TL;DR: Minecraft has bad depth precision, we need a new mod that fixes that