As a “yes” voter, I concede it’s kinda nice to be able to +1 (like button) something but may not have much juice to the squeeze and it begins to clutter up an otherwise very clean interface. Unless the sentiment changes, might as well disable it!
Sometimes it takes a while before all changes are visible. Sometimes a "reload" of the browser is necessary. Some changes necessitate a restart of the forum. But eventually it will be gone.