In principle, I'm in alignment with that.
There are nuances, of course. I write a lot of "long content" and as part of that I realize that I periodically write about something I wrote about in the past (often YEARS in the past) although both the "old" and "new" posts will have been created from scratch.
For example, quite recently I wrote a piece about being an expat and missing certain food items... and a few days later I realize that I actually wrote something pretty similar a few years back. I didn't copy anything, and it's unlikely a plagiarism checker would even recognize the two pieces as "the same" but I probably said pretty much the same thing.
When you've been a fairly prolific writer for 25+ years, that's likely to happen.
But that's quite different from outright "recycling" old posts.