On a Windows account, a user can change the default browser for their own account. Therefore, a user can delegate the choice of default browser to the remote management. A user can record which sites their own browser visits. Therefore, a user can delegate that authority, allowing remote management to record which sites that user visits. A user does not have the authority to record which sites are visited by another user. Therefore, they cannot delegate that authority to remote management, because they themselves do not have it.
On ChromeOS, you can filter your own access to websites. You cannot filter other users' access to websites. But signing in to a remote management can filter other users' access to websites. This grants the remote management privileges that the user doesn't actually have.
On ChromeOS, you can filter your own access to websites. You cannot filter other users' access to websites. But signing in to a remote management can filter other users' access to websites. This grants the remote management privileges that the user doesn't actually have.