Were a lot of Freud's initial ideas discredited? Definitely. But the same is true of Isaac Newton, who was an alchemist and theologian. Consider his recipe for curing plague with toad amulets. [2]
The beginnings of any sort of knowledge are messy. But progress is possible.
[1] https://en.wikipedia.org/wiki/Luminiferous_aether
[2] https://www.theguardian.com/books/2020/jun/02/isaac-newton-p...
Deluze is methods of community organization beyond the heirarchial.
Derrida is, well, literary criticism. You want Baudrillard for a less-incomprehensible take.
(Oedipus is Freud and Electra is Jung, and they are both well-understood to mostly be full of nonsense.)
The idea that we aren't teaching children the works in the Modern and Analytic tradition is truly a shame, however, given the conflict with religiosity, it does not surprise me that public education programs avoid it for political reasons.