I don't know why you got downvotes for that, but I agree and have had similar experience - multiple offers are very stressful for me. The pay and PTO are usually secondary concerns. Usually it's more stressful because I get job offers through my network, and when I turn down offers I'm also turning down one of my friends who's gotten really excited for me to come work with them. Also it gets more stressful when the better job for me pays less than a job I dont want as much, making it harder to decide. With only a few offers, you take them all seriously and spend time evaluating which ones will lead to a more fulfilling life, not just which ones pay more.

But... I bet the author is right about this mass application technique lowering his stress. He's gaming the system and not applying through his network, there's no great reason to care deeply about any of the offers, and he has so many offers that it's not risky to mess some of them up. You get to be detached and learn more about the application process by doing dozens of them at once.

It reminds me of this Moth podcast story about the guy who data mined for dates on OK cupid. https://themoth.org/stories/data-mining-for-dates Worth the listen, but he reported being a lot less invested in individual dates, and seeing interesting patterns in the process. It did add some stress, but a different kind of stress than he had with one-date-at-a-time.