Ventura 13.5.1 opens. finder windows and programs without asking

Look into System Settings->General, 'Login Items' and turn on off what you want to see at login!

If you press CTRL+power button to shut down your MacBook Pro, is the option enabled to open all windows next time you start up your Mac again?

If you want no open windows etc after a restart or new login, do not leave it enabled.

Did you leave this checked?

And if he left it checked, as I asked, the apps windows would open automatically.