I don't understand this sentiment. And, I am surprised to see it on HN this often too. It's saying - I care about X, till problems with X are all solved, any ef

I don't understand this sentiment. And, I am surprised to see it on HN this often too. It's saying - I care about X, till problems with X are all solved, any effort on anything else is snarked upon with judgement of wasting effort. It used to be only on threads discussing an accomplishment of a space agency of a poorer country, and a popular sentiment was if a fraction of their GDP should be spent on science and technology till poverty is eradicated. Same thing here, why one person should spend time on a personal project until we resolve climate change. I understand prioritizing bigger problems with more time, effort and money. But, ridiculing others for spending time and effort on making/discussing something you think is not the most important is something else.