Current "extra section" is drastically incongruent with CDC data.
First edit: overdoses involving heroin have been declining since 2015. (source: https://www.cdc.gov/nchs/products/databriefs/db457.htm), based on nationally representative data. (page 4, figure 4, quote: Significant increasing trend [regarding heroin involved overdoses] from 2001 through 2015 with different rates of change over time, stable trend from 2015 through 2019, then significant decreasing
trend from 2019 through 2021, p < 0.05.)
Second edit: illicitly manufactured fentanyl (IMF) without concurrent prescription opioid use is attributed in ~40% of fatal overdoses (source: https://www.cdc.gov/drugoverdose/featured-topics/overdose-deaths-data.html) (IMF only, 19.8%. IMF and Cocaine, 10.5%. IMF and Heroin, 10.3%). Prescription opioids (taken with and without illicitly manufactured fentanyl) are seen in ~12.5% of overdose deaths.