To be honest the only philosopher I know of who convincingly argued that everything is reason is Hegel, but he did so more by making the idea of reason so broad that even empiricism (and emotion, humour, love, the body, etc.) falls under it...
"History as the slaughter-bench" - and yet the aims of reason are accomplished."
But there are also Hegel scholars (Walter Jaeschke for example) who simply consider these accusations to be uneducated and that he does not see the atrocities of history as reasonable, but on the contrary makes criticism possible in the first place.
https://en.wikipedia.org/wiki/Lectures_on_the_Philosophy_of_...
Philosophy will continue to be bankrupt for as long as Hegel's stranglehold on Philosophy remains. Kill his thought, Kill "dialectics", Kill the "world spirit" or "Geist". Otherwise philosophy continues down the "post modern neo marxism" loony world that has led so many to turn reactionary.
Edit (in response to the comment cus I can't reply faster since Dang's HN policies are bad):
I cover to cover read his shitty books. They weren't worth opening, let alone reading. This is the same for most of the rest of the "postmodern" canon.
Competitive debate meant that we weaponized these long dead idolaters for our own needs. I've (unfortunately) read Zizek, Foucault, Derrida, Deleuze, Sartre, Heidigger, etc. I regret most of the time I spent reading these authors. They are all intellectually bankrupt and many of them are straight up pseudo-scientific charlatan snake oil salespeople (Lacan).
But Hegel is definitely not fashionable.
I genuinely can’t think of anyone less postmodern than Hegel. He’s a pure rational traditionalist who believed completely in objective truth and morality and grand narratives lol