Id argue it’s more than a simple empty action.
The new update actually misaligns individuals values. By allowing people to like posts I will never see, there are two impacts-
First, the liker believes they have engaged with my post, an action an #onlyzaps user will never see. That is obvious.
Second, and more importantly, the #onlyzap user fails to receive the type of engagement they wanted by becoming an only zap user.
This is key- as an onlyzap user is opting into a system where more meaningful engagement is the goal, the new update actually discourages the meaningful engagement only zaps users are after by non onlyzaps individuals. You’ve removed the incentive for non-onlyzaps users to provide more meaningful engagement for those that are demanding it.
Their like is not only meaningless, it disengages them from the people they’re liking, hurting the onlyzaps user by limiting their ability to encourage more meaningful engagements.