What exactly are you correcting? I used the word right as far as I can tell.

"Looks can be deceiving" is an extremely common idiom that means basically what I wrote in the title.

I understood the meaning and it seems like you and everyone else here did too. It may not be the word you would have chosen but that's life.

HN submission titles can be improved based on feedback, which is one of the functions of comments. As you can see, the usage no longer appears in the title.

The meaning being understandable isn't an effective criterion for good writing, because even egregiously poor writing with multiple errors of grammar, spelling and word usage can often be understood.

Yes it seems like they removed it entirely. An impressive victory for nitpickers everywhere. This site embarrasses me sometimes.

If you recommend the site to someone, and they see nothing but excellent titles on the front page, then in that situation you're spared embarrassment.