Not anyone on here but people in general.
Person A: “I will buy [product X]”
Person B: “Don’t buy [product X]. You should get [product Y] instead because…”
Person C: “I’m concerned about your spending habits.”
Person D: “Lol you actually wasted money on that trash? What a dumbass. [Product N] is much superior.”
Person A: “It’s MY money. I EARNED it. I’ll spend it however I WANT.”
Like okay? 
No one is saying it’s not your money. There’s no SWAT team with submachine guns raiding your home and forcing you at gun point to put another item in your cart. It’s like speaking with children but they also pay taxes.
Tbh I had a friend who would criticise anything anyone bought when we just wanted to talk about it and its really quite annoying.
The only time I criticise someone spending is if they wipe their entire savings on a leasehold property otherwise I dont give a shit if they buy a fuckin juicero. Ironically the guy who'd constantly criticise everyones purchases did infact buy a leasehold property.