As of 24 October 2023 ALL Inactive Members now have No option of a "LIKE" Button.
To have the like button, you must be an active Member and to start that off you must post in:
[Only registered and activated users can see links. ].
Then continue with good posting rules:
[Only registered and activated users can see links. ]
Then read this also:
[Only registered and activated users can see links. ]
And while you're at it, read this:
[Only registered and activated users can see links. ]

Edit: 29th April, inactive members also have no PM system.