Tell that to the Nobel Foundation:

> Not a Nobel Prize

> The prize in economic sciences is not a Nobel Prize.

https://www.nobelprize.org/nomination/economic-sciences/

This is in the same category as correcting people who say “this data.”

Yes, you’re technically correct. But also, you missed the point and are being self-defeatingly pedantic. The economics prize is valued for all the reasons the Nobel prizes are; they carry similar prestige and are thus used interchangeably.