Ah yes the normal way of becoming a Marxist, read philosophy and then let encounters with anti-capitalist ideology along the way with Stalinists de-radicalize you. Most people I've met or know online would say on their shift leftwards they had their critiques of capitalism long before they started reading leftist theory. It's a pretty fundamental aspect of leftism you'd figure, not considering the weird market communist types or whatever the hell flavor of post-left twitter is on.