Then we mean different things and you're right about yours. If the altcoin arrives as payment for work you actually did — a test you ran, a bug you found, something you shipped — value was produced and the exit doesn't take sats off anybody; the other side got the work and paid for it. What still sits underneath is the last step: the conversion is priced by whoever is willing to hold what you're leaving. So the experiment costs you a counterparty once, at the door you exit through, not at every step along the way. The part I'd trust afterwards is the knowledge of which ones broke under your testing. That stays after the coins are gone.