Note that I would be careful about using pure tones for too long. Pure tones end up focusing the energy in your cochlea towards a small area of hair cells. Since these cells don't regenerate, it may be wise to avoid overstressing them.
They can't do that either with Wallet items. That's kind of the point: you can hand over your phone with a wallet item "unlocked" and visible on the screen, and that's all they'll have access to.
You explained it in 2 lines that would make for great comments.
It seems useful to educate C programmers who don't have "significant experience" because, well, by definition, not every C programmer has "significant experience" and they are the ones who would benefit most from learning this.
It's not about being controversial: nobody's going to disagree with your explanation (it is what it is - it's not an opinion).
Note that I would be careful about using pure tones for too long. Pure tones end up focusing the energy in your cochlea towards a small area of hair cells. Since these cells don't regenerate, it may be wise to avoid overstressing them.