Think of Reddit as Cyberpunk or Mirror's Edge: a world controlled by corporations instead of governments. A corporation only seeks its own interests and those of its shareholders. In that world, you're nothing. There's no transparency, and you don't have any rights.

Lemmy instances are run by the community and funded by donations. As such, the interests of the group as a whole prevail; they are not the interests of shareholders. To maintain cohesion, transparency is necessary, hence the modlog. Without transparency, cohesion and community cannot be maintained.

Reddit and Lemmy are two completely different worlds.