These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
True Art Is Angsty - As mentioned, Bu˝uel won best director at Cannes for this film, which is one of the very few considered by UNESCO as part of the world's cultural heritage.
Vindicated by History - The movie was disliked by Mexican critics on its release. Nowadays, modern critics hail it as a milestone of Mexico's cinema, specially when Mexican cinema suffered a Dork Age after 1970 and its still struggling to recover from it.