Degrees don't matter, publications do.
Particularly when that degree is from a single year program and now 20 years old, in a field that has been revolutionized multiple times in he interim. It's a bit like someone saying they are a web developer because they went through an App Academy like boot camp in 1996, if such a thing existed. King's College is bit more prestigious than that, sure, but content wise it is a fair comparison.
It would be a different story if he published in the meantime, but he did not. Nor did he work on practical projects in industry or anything. He shifted gears to philosophical speculation which he has done since.
Not only are you moving the goalposts, but you are again incorrect. Since 1999, Bostrom has authored four books and published over 30 articles in peer-reviewed journals.
There are good arguments to be made against Bostrom's Superintelligence, but malignments and surface analogies aren't appropriate. Please engage the ideas, not the man.
Published in the field of neuroscience or computer science?
Read what I wrote again please. I think you misinterpreted.
This is incorrect. Among his degrees, Bostrom has a master's in computational neuroscience. His arguments have also convinced PhD neuroscientists (such as Sam Harris) and computer scientists (such as Stuart Russell) about the potential dangers of AI.