Yes, please. It's also not the title of the post, so as long as HN is editorializing, might as well do it correctly.

Curious if there’s any reason this is of particular importance. E.g. is it bad for screen readers?

We as human beings should always strive for the better, to improve, to do the best we can within reasonable bounds.

It's imo not about pettiness, finding errors of others to shame them, or holding others to a bar set too high, but rather, if we don't, we start tumbling towards lesser good things as a society and community and humans.

Not to say that it's not ok do make errors (it is, and it's human), but if we spot one and can easily correct it, we should.

Perhaps not so relevant for a misplaced apostrophe, but language is malleable and if we were always using it 100% correctly it would never evolve.

If this is the case, why not speak AAVE or patoix or Esperanto?

his, hers, theirs, ours, yours,... it's? It is just egregiously wrong.

It's bad for English readers

bad grammar and it makes my brain melt trying to parse through the error.

Non-standard doesn't mean improper. It's still valid English. Just because some people are too lazy to type or comprehend an apostrophe in the word "it's" to signify "it is" doesn't mean that the rest of us have to follow their lazy example.

In which case, it's still wrong in the title. Just because people are too lazy to scroll up and read the erroneous title doesn't mean nit picking pedantry makes them correct.

I just scrolled back up to the title and realized that my argument is totally wrong. They weren't trying to say "it is". I was wrong.

Get in the corner!

The problem isn't the use of "it's" to mean "it is". The problem is the use of "it's" to mean "its", a different word with a different meaning.

Yeah, I took up a cause that I was passionate about a little too quickly there, and realized that I was fighting for the wrong "it's". It's past my bedtime here...