Withnail & I: More Than Just a Hangover Movie?

Okay, so I just re-watched "Withnail & I" for like, the millionth time. Man, that flick just GETS me, ya know? It's not just about two blokes being utterly useless, though they are DEFINITELY that. I think it's a way deeper commentary on the death of the counter-culture and the anxieties of the late 60s/early 70s bleeding into the Thatcher years. Hear me out... Withnail, especially, represents this kind of decaying 'ideal' of the free spirit, right? He's all about art and passion, but he's also a raging alkie who can't even be bothered to clean his flat. Marwood (or 'I' as he's only known) is more grounded, but he's still drifting, terrified of ending up like Withnail. The entire trip to Uncle Monty's cottage feels like a desperate attempt to reclaim some kind of pastoral idyll that's just totally out of reach. The rain, the locals, the utter lack of food...it's all a pretty unsubtle metaphor for the way those dreams just soured, y'know? And the ending? Withnail reciting Hamlet in the rain while Marwood heads off to pursue an actual career? It's heartbreaking. I always saw it as him being relegated to an almost permanent purgatory. He's not even equipped to move on and live in the 'real' world. Kind of reminds me of the ending of "The Graduate" (1967) in a way. Only way bleaker. Maybe I'm overthinking it, but every time I watch it, I find some new, depressing layer. Plus, Richard E. Grant's performance is just... legendary. Seriously, anyone else got thoughts on this? Am I reaching here? Let me know!