I don’t think that’s quite the takedown of the gp you might it is; copyright doesn’t really ensure any of those things. It looks like think you’re conflating a few things here, particularly attribution and profit. I don’t think copyright guarantees either.

The gp was speaking about the purpose behind creating copyright, which is to produce the maximum number of works, while you were looking at the results to the author, the goals of recognition and payment.

Only specific representations are protected: non-derivative readaptations are generally permitted (the thorny issue is whether it is derivative or not: c.f. Disney vs Pixar). Additionally, the US specifically avoids guaranteeing profits for works by endorsing “sweat-of-the-brow” or effort-based value judgements. Doing otherwise is an implicit validation of communism: to each according to their effort, which is counter to the distribution policy under capitalism.