Putting explosive self destruct packages on drones is a VERY bad idea.

Its one thing to scramble the data on board like the drone that Iran grabbed did but the repercussions of the flaming bits and fuel of a blown up drone raining down over a city or one with a live self destruct package would be a lot worse.

Iran and China did not get anything really valuable as the drone was a old model and the data the drone had collected was wiped along with the sensors that collected it

The Chinese spend a huge amount of money in cyber warfare.

If they clash with the US, it will disable ATM cash points and traffic lights in Chicago and Los Angeles, plus the central distribution hubs of Walmart, thereby denying Americans their daily intake of vast tubes of ice cream with impregnated dough ball.