Nah, Withnail and I is simply slower and much more paced. It's from a completely different era of cinematography and cannot be watched with the same mindsight but it's by no means less clever or more poorly written. I can understand that someone who isn't English may not appreciate to an extent the characterisations and will cede that the appeal is narrower but you're definitely selling it short in your synopsis.
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Vita brevis,
Occasio praeceps |