

It might turn out to be something different - but just in case it does log you out after a system restart (but maybe not after network disconnect) it would probably have something to do with kwallet (the key ring which has your credentials) not unlocking correctly.
If that’s the case this or this might be further pointers to look into.

‘Nerds should stick to building computers’ but not the software computers are running is honestly one of the more harebrained takes I’ve read.