So you're just googling post hoc and haven't actually looked into it. How scientific.

This study [1] is what got me interested, they claim gray matter loss compares to control group even in asymptomatic cases but they excluded vaccinated people from what I can tell. I want to see this level of data for the groups I mention and then we have a really good insight. And this data should be possible to get.

Your links are articles referencing self-reports and doctors guesses...

[1] https://www.medrxiv.org/content/10.1101/2021.06.11.21258690v...