rayc, you should at least try to get it right. Lynott actual cause of death was caused by heart failure caused by sepsis and respiratory depression caused by pneumonia.
Septicaemia was the precursor to those events. Opioid use is implicated in sepsis. It is highly likely that the root cause of Lynott's death was opioid addiction which caused sepsis which caused heart failure, and pneumonia, which caused respiratory failure.

There are a good many studies connecting opioid use with sepsis and resulting in death. There is yet to be a complete understanding of this connection.

"is there any point?"

The point should be pretty clear when referenced to the thread's title.

It matters little if someone's cause of death is listed as suicide, drug overdose, or they died from eating too much ice cream.
Did being a famous musician influence that death, and would those sorts of influences affect you?

We could also produce a chart of musicians who died in plane crashes.
People don't die from plane crashes; they generally die from blunt-force trauma.

There is also the point of discussing issues that seriously affect musicians, as many of us here on this forum are musicians and generally have greater exposure to drug use.

Opioid use is causing the death of thousands of people worldwide. So yes, there is a point to having these discussions.

Billy

“Amazing! I’ll be working with Jaco Pastorius, Charlie Parker, Art Tatum, and Buddy Rich, and you’re telling me it’s not that great of a gig?
“Well…” Saint Peter, hesitated, “God’s got this girlfriend who thinks she can sing…”