The motivation for employing the loophole in the case of celebrities is to protect them from undue and potentially dangerous scrutiny. ICE's action is to withhold from public scrutiny illegal activities of the government–Gestapo maneuvering.
ICE Is Using Taylor Swift’s Loophole To Hide Deportation Flights https://www.levernews.com/ice-is-using-taylor-swifts-loophole-to-hide-deportation-flights/