[llimllib]

That water's _starchier_ but it's not a myth. Here's Kenji on it: https://www.seriouseats.com/how-to-cook-pasta-salt-water-boi...

(I get what you're saying, spiritually, your pasta water from your giant pot of one box of pasta isn't gonna do much to thicken your sauce. But it's not a myth, just a matter of degree)