That doesn't mean it needs to happen silently; such interception should result in an unremovable browser indicator warning that it looks like your traffic is being intercepted.
If you consider it acceptable for the network you're on to intercept your traffic, then you can certainly continue to browse despite that warning. You might decide not to transact any private business on such a network, of course.
If you consider it acceptable for the network you're on to intercept your traffic, then you can certainly continue to browse despite that warning. You might decide not to transact any private business on such a network, of course.