I don't think it's any coincidence Zizek is well-regarded and would be well-regarded even if he wasn't this funny raccoon human eating hot dogs in the steet. Depending on who you ask, either his work on ideology was a complete revelation they were waiting their whole life for (Todd McGowan says as much), or just the poor man's Derrida. He talks in circles because he's pegging the same cube into the same circle-shaped hole over and over, like hegelians often do. If you're interested on finding out why Zizek is esteemed, you should try reading Sublime Object of Ideology. It's short, consice, well-explained and there's plenty of material online digesting it, and you'll get a good idea of Zizek's proposed framework. Who knows, maybe it'll get you into Kripke and language theory.

I mean, Matt Christman is infamous for saying Zizek was a hack fraud, because "it takes one to know one", and now his streams are just shy of being full of lacanianisms, constantly brings up jouissance in the exact same way Zizek does, it's just a very valuable tool to analyze ideologies.