I can't believe this nonsense is back. Right at the start of my start menu under "recently added": 'Maxon Cinema 4D'". Why??
This was finally solved after years of multiple unwanted C4D installations:
installing C4D is now optional when installing After Effects 2023 and later.
As noted by @JohnColombo in Prevent Maxon Cinema 4D Force Install
The add-ons overview for AE in the Creative Cloud application just shows 'installed :white_heavy_check_mark:', no option to never install it or even to uninstall it.