Do you understand how concentrated fentanyl is?
There are no "facilities" making this shit. Think like the small home labs that used to make meth, except a little fentanyl goes a LONG way. One kilo of fentanyl is 1 MILLION pill dosages. A single dose in micrograms. This isn't cocaine or meth.
Look at these people making this shit, how do you find and bomb this? And it's not like finding and burning fields of poppy.
https://www.wsj.com/story/inside-the-mexican-cartels-that-rule-fentanyl-smuggling-48b5c665
And obviously we are not going to bomb any thing in China. I assume precursor chemicals are made by "legitimate" chemical companies...and from what I have read, that is indeed the case. China can schedule chemicals all the want to, local officials will still be happy to take bribes and look the other way.
Life on the road is hard living for too many of these artists. Drinking, drugging, it catches up in a hurry. Or maybe the dude just had coronary heart disease from a poor diet and had a widow maker...it's not like non-stars have a dietician on staff and caterers, dude wasn't Taylor Swift. Shit happens. Either way, it is sad.