Wildly anecdotal, this is like thirdhand info, so take with a bunch of salt. But I have heard before that heroin/opioid addicts have begun to deliberately seek

Wildly anecdotal, this is like thirdhand info, so take with a bunch of salt. But I have heard before that heroin/opioid addicts have begun to deliberately seek fentanyl because it's cheaper and more potent. It makes at least some sense given the common narrative of the pipeline from painkiller addiction to heroin (i.e. it's the same relationship - people who are addicted to painkillers may transition to heroin because it's cheaper and more powerful).