Based on what exactly? You’re one of the more informed voices here, but this, in fact, sounds specious.
I mean, Dr Andrews first came up with the idea of pitch counts for kids. For a 17 year old it’s 105 pitches. I’ve seen kids continually overused so some coach can receive praise. So, pitch counts for kids whose bodies are still developing makes sense, but you know what makes more sense? Proper mechanics. If pitch counts work (I’m including relievers because the idea they’re overused is relative to pitches thrown) why is there a continual amount of pitching injuries? I’d argue that mechanics far and away are responsible for the number of pitching injuries we still see.
If you don’t want to push the envelope of how many days in a row a reliever is used or how many pitches a starter can throw in any particular game, where’s the bar set? To me it’s an arbitrary number that has been ingrained in most, if not all, managers (probably with guidelines from their respective front offices). And there is little evidence to support it’s working.