The issue with these statistics is that they look at the average, which is heavily boosted by the exceptionally expensive weddings of the higher upper-class. The median is significantly lower.

https://silkstemcollective.com/median-and-average-wedding-cost/

Also I’m not American, maybe people there just spend a lot more on weddings in general than what I’m used to.

I have no clue how you define “middle-class” but not even the fanciest weddings I’ve been to have spent even close to $250 per person. That kind of expenditure sounds quite a lot more like upper-class to me. Assuming you invite 100 people to the wedding, an average Joe will not have 25k to spend on one party.