It's not a "tech" book, as if it were a 2008 book on how to use a specific version of Access. It's on programming practices. Most good programming books from 20 or 30 years ago are still relevant today. Instead of acting smug with your jackie chan meme(?) you could just ask next time. I hate these one line "zingers" people drop like this is twitter.
Then those books aren't any providing any deep knowledge, just superficial trivia about whatever is fashionable. some people do that as their job, though, so do what you want.
Uncle Bob books were constantly suggested as good go-to programming books here on HN for years, though in the past ~4 years they tides have finally turned against him. And thankfully, Martin Fowler too.
This is addressed in the second to last paragraph of the blog post: The 'last straw' that made the author write that post was Robert Martin doubling down on his advice, even today.