I am seeing the same behavior here.  The computer I am testing with is DEP enrolled.  I also notice I had to reboot the computer for some of the restrictions to apply.

I noticed this too on a DEP-enrolled test machine. However, I also noticed that the "-" (minus) button is grayed out/inoperable. Profiles visible 👎 but not removeable 👍

Seems like he behavior is mainly for devices that were user enrolled and not DEP enrolled. Devices that are User enrolled, the option to remove the MDM management profile is not greyed out. going to have to keep the MacOS Ventura upgrade restriction until this is fixed. 

in some cases if you block the profiles pane, profiles don't install. this could affect profiles that you are trying to deploy

This is by design from Apple.  In order to be more open about what settings are being applied to a device Apple has removed the ability to restrict access to the Profiles Menu.  The only way to lock down your MDM Profile is to mark it as not removable within your Pre-Stage Enrollment.  

Its recommended if you don't want users to install profiles they download you can use the following 

Apple disallowed this with Ventura. Not being able to restrict System Settings > Profiles is working as intended.