Quote - Well chemical photos also use particles of silver halides as their 'pixels' so that is also digital in a sense since the light is recorded on these discrete elements. That is where the term 'film grain' comes from and refers to how fine the particles are.

But I understand what you mean here, that there is too much rigid structure i...

However IMO this is still no excuse

I'm in complete agreement with your second point. My impression of the grain is silver halide particlxes is that no matter how much you magnify it, it remains irregular. It's the irregularity that gives it "life," and getting that with a digital photo is always a bit of trickery. Like, as I said, generating "random" numbers.