There are entire organizations devoted to assessing the effectiveness of various kinds of charity and measuring how many lives they save (e.g. http://www.givewell.org/ and https://www.givingwhatwecan.org/), and their reports can be found within 20 seconds of googling, less time than it took for you to type your based-on-no-actual-information sarcastic judgement.
Sarcasm plus knowledge would be fine.
So it's not so much that people here hate sarcasm as that they value the differences between Hacker News and other places on the internet where people type text in boxes.
And in my experience, it's rarely very effective in changing people's opinions, if they are not tending to agree with you already in the first place.