I think people are being a bit cynical with that take, although it's not completely unfounded. There are other factors like new technologies that are overall better, and also restructuring of teams due to people leaving and/or layoffs. What you end up with is a codebase or parts of the codebase that accumulate "damage" (or increase in entropy), and sometimes the easiest thing to do is to start something from scratch again.

So yeah sometimes the path of least resistance is building something new.