He said he ran it through compiler and it didn't complain (which he later claimed was sarcasm), then he said he couldn't remember the syntax because of all the different languages he used over the past forty years "That’s how long I’ve been programming, so long that I can’t even remember the syntax anymore."
and then went on a long rant about all the computers he used as a kid.
He didn't admit the mistake on the paywall he said "Young webpage developers designing UI for younger aged eyes, and not thinking that when people get older they increase the font size of everything on their device so they can see still, which affects the layout of everything being displayed."
He never once said he was wrong in fact he double down on it with "I’m not going to change my original comment, and I still stand by it. If they obfuscate the way of closing the pop-ups by making the close button so small and insignificant compared to the other likewise texting around it, to me that still paywalling, as they’re trying to trick people into signing up for an account to read the article."
Again, I am not worried about the mistakes. He also certainly doesn't need to apologize. A simple acknowledgement without deflecting into some long excuse as to why it's not his fault or he's just so experienced that he got the details mixed up would be fine. Also again, if this was a one off example, I wouldn't have said anything, it's a trend I've seen him do a few times on a few different posts and it rubbed me the wrong way so I decided to call him out on it, like many others have also done.