Some of this is true! But I'm noticing people mentioning things like the size home they own, and the size car they own, and wedding money. Even THAT is a jumping off point that some people can't get to.
I live in NYC and a number of my friends have apartments that would never work for hosting events unless everyone was sitting on each other's laps. I only just moved into an apartment where I can host people again (more due to roommate situation than size). And maybe this gives me a unique perspective on how not having money can affect so much more than budget. Being constantly surrounded by things so out of reach that your peers are enjoying can make you feel poor. I agree that a good attitude can help but it certainly is not only mindset that makes you feel poor. I think anyone who has struggled to get going in a city can agree with that.
Again, I am not begrudging that people have different circumstances, it just seems like some circumstances aren't even considered when discussing this. Not everything I speak of applies to me personally, it's just stuff that I am familiar with based on what others my age are or have gone through. I know it can be done, because when I moved here, I lived very lean myself. My apartment was 7 feet wide and didn't have a bathroom OR a kitchen (made it a little challenging to not eat out though). I still don't splurge on certain things so that I CAN splurge on things I value more (travel, experiences, etc.). I don't consider myself spoiled because I was able to start out here at all, but I do recognize what about my situation was a privilege that not all have.
Anyway. tl;dr everyone has their own unique circumstances and challenges but we all end up dead in the end. I'd rather value the whole journey than the last leg.