> hey, guess what? reddit "profits" a LOT from unpaid work from their moderators.

That work is not forced, they all choose to "work" for free and can quit any time they want.

And that work may be unpaid in monetary terms, but many of those moderators enjoy their share of internet fame or a sense of power over "commoners" or their feeling they are doing something for a common good, that they are happy to continue working unpaid.