I see "addictive" being an inate property.

And then "addicting" is something which is engineered to illicit unwanted addiction from you. Like highly processed foods, synthetic opioids I think I use them interchangeably based on the context, or games/services that utilize engagement algorithms.

A human work can still be addictive, or I guess all addicting things are addictive, but you could have a human work which is unintentionally addictive.