What is easy for you is a months salary for someone else. Keep in mind that HN is read all over the globe and that if $129 is 'pocket change' for you that you are the exception, not the rule, and a lucky one at that.
He's not saying he can't afford it. He's saying it's a lot of money. I'd imagine when you make minimum wage, it's a lot of money even if you can afford it.
I make typical FANG SWE income and I still consider it to be a lot..