This is fine for my use case. I don run wifi on my gaming rig but I guess I'll see if any other things prompt me for password after logging in next time.
Edit: Nope, I have no clue what is even possibly stored in Kwallet, if anything, but it still pops up and requests password. Ironically i went from typing my password 2 times to 3 times by enabling auto-login. I know have to unlock the keyring once I login, and then unlock Kwallet once I try to launch Discord. We love it.