That was my assumption as well, but the author makes a good case for it being an Akamai bot detection script designed for mobile responsive sites, and inappropriately implemented on desktop by these big sites.
Bots will either all have the same (or a low diversity of) fingerprint, or if not then they will have the same randomisation techniques to mask the fingerprint.
Some of the additional browser features that access devices do reveal the most trivial way to determine "this is not a bot as bots don't have this fingerprint".
Of course that has implications, if privacy makes you look like a bot (it does), then the web has more friction the more private one is.
Now you’re playing botsimulater 2023.