Yeah, I expect there may be some pushback with this piece of The Adventures of Conman Sven.
First, here's a link: https://concussionfoundation.org/CTE-resources/what-is-CTE
Second, here's the relevant quote (especially applicable to the time the claim by Sven was made):
HOW IS CTE DIAGNOSED?
Currently, CTE can only be diagnosed after death through brain tissue analysis... In fact, until recently there were relatively few doctors who knew how to diagnose CTE.Third, here's the background: When you self-diagnose yourself with a disease that can only be diagnosed after death, in an attempt to further yourself from your Kickstarter responsibilities, you deserve to be mocked. Maybe next time, Sven will pick a different random illness.
I really hate having to explain a joke, but if you haven't been following along from the beginning it may just be a bit obtuse.
Don't worry, tomorrow should cheer up all of the Conan Fans ;)