"I buy more $10,000 cardigans than you buy Hanes undershirts" is kinda the definition of bragging. What a weird ass corner of the internet where it's just assumed everybody earns $millions. Like, lol, no outside SV, London, and NYC, that's truly exceptional. Like, the average CEO in the US doesn't even clear $1 million (according to Google's AI search results).
You can construct a philosophical argument that value is all relative without having to casually drop anecdata demonstrating that you personally spend many hundreds of times more on an everyday object than is typical without consideration.