Why so much hate about this movie?

Rating: 6/10 (18 July 2019)

I definitely enjoyed watching this movie, I admit the ending can be a bit disappointing, but I totally understand that this is a biography, and even if it has many inaccuracies (mainly in terms of language), it's not meant to be an epic Indiana Jones ending fight and win kind of adventure movie.
It's about a man that believed in a city lost in the jungle (not forest like they call it many times in the movie) and was obsessed with finding it, and for the good reasons, to share and learn. Maybe if there were more man like him (assuming the portrait is accurate in terms of the reasons for which he wanted to find the city) in history, now the world would be different and the past not so bloody.
Besides the controversy, the movie is well acted and beautifully filmed.
I see many complains about the writing, I didn't think it was bad at all, it's maybe just not so commercial as people always expect from Hollywood, looks like it tries to be faithful in the order of the events as they happened and might have failed a bit on engaging certain public, but it was definitely not boring for me.
I very much appreciate the thematic and enjoyed this production.
By the way, I'm from Argentina and traveled all South America, if that counts for the fact that this movie doesn't offend to south american people.
Note: read the trivia about this movie, it's so much fun all the things that happened in the jungle while filming.