Some thoughts on all this.

1. I am not necessarily anti-ambituity in a finale, when it is the right ending and done well. For more of my thoughts on this, check out this article. Due to The Writing Cooperative's old (now revised) rules, I had to use US English for this piece, which as a UK resident almost physically hurts, by the way. :)

https://writingcooperative.com/when-to-write-ambiguous-endings-9bfd7b9f0913

2. I didn't much care for Triangle of Sadness, and I completely agree that the ending is rubbish. It thinks it is clever and it isn't. Also, the vomiting sequence is vile. My biggest issue with the film is that for a satirical comedy, it really isn't that funny. Rich people aren't very nice? Well, duh...

More in my review here, if you're interested:

https://medium.com/simon-dillon-cinema/film-review-triangle-of-sadness-c6590fe20e63