I could totally see a friend spending 5mn explaining that his cost has gone up 300% when venting while getting a drink together. I don't understand why you're finding this so unbelievable.
You talk to your friends about "total burdened costs"? Or something went up exactly 170%? Not "almost tripled"? Sure.
If you and your friend are both interested in how businesses work, you're definitely going to talk shop
Yes of course, in generalities. That's the whole point. Of course you talk to your friends. But you don't go over your income statement line by line with them.