Oh dear oh dear oh dear !
The most dangerous thing about Li-ion !
Is the user , and his or her lack of knowledge . Most battery mishaps can be traced directly back to user error !
And sure , Li-ion , Lipo etc , will flame from time to time , but again , if one were to examine the actual root cause , I would dare to say [ or claim ] user error !
Li-ion is part of our lives , flashlights , power tools and even powering cars , bikes etc .
I dont think the battery can educate itself , so it is up to users , to educate themselves , make themselves safe ! As Li-ion ATM is not 100% safe , but nothing is 100% safe , not even AA batteries , well they might be 99.999% safe but not 100% , and the most important factor with Li-ion , is the human factor !
My brother just gave up on Li-ion , he was simply too lazy to use a MM , or bother to check the batteries from time to time , even though I made him aware of the risks . Now he is back to AA powered lights , as he simply wants to run them down and not monitor the state of the battery . And I think average Joe and Floe probably feel the same way , their really not interested in safe procedures when it comes to batteries [ possibly from decades of exposure to AA batteries and the other sizes ] . There are people out there that never check tire pressure , there oil , or the spark plugs , they simply expect things to work without maintenance .
Sure there are cheap nasty batteries out there , but 99.9% of the time , they need a lot of help before they will flame out , and that help comes from the user !
Bottom Line :
Worry more about people and what they do and dont do , than the battery itself :