To me it reads like a desperate attempt to get some attention by trying to take the author down a peg or two, for absolutely no reason.
The author was hired by Amazon, Microsoft, and Google in a span of 3 years. The vast majority of the tech sector dreams of landing a job with each of those employers, let alone go through multiple of them. The author is obviously good hiring material, and none of the world-class employers saw that as a problem.
But the LinkedIn rando is oh so far better than everyone in the world, and has a far superior hiring bar.
I bet he also posts comments on news pieces on supermodels getting married on how he doesn't consider them appealing.