You're right, it's not urgent—and neither is it important (as far as they know, not having read it.) So people will just scroll right by your hard-to-view comment†. And if that's the case, why bother writing it?
Would you post a comment here in a language only you speak? No, because the point of commenting is communication, and that comment wouldn't be communicating, right?
† Many people only view HN on mobile. It's a time-killing social news app; I don't want it anywhere near my workstation!
It's still one that doesn't mesh perfectly with the WWW on less tiny form factors. You could also try turning your phone sideways.
Code blocks, in some cases, are just the simplest way to quote things. Random people on Internet forums should not have to compensate for other people not being on devices that make sense for an Internet forum.
I do have a laptop, of course, but I’m not always near it. Mobile web is not a niche use case in 2020.