Zaps for follows is like paying people to be your friends, or hiring an escort to pretend to be your girlfriend at a party.
It is not genuine. It is scammy, desperate, and pathetic. This tactic is reserved for bots and marketing companies playing a numbers game.
There are less morally vile ways to entice people to follow you if you want to utilize marketing tactics. Such as contests, or giveaways for engagement.