My friend says that even though an event has (for example) three outcomes with outcome A at 10 percent, outcome B at 10 percent, and outcome C at 80 percent that the outcome of the event is still random and I’m saying that it’s not random.
There is some literature about ‘degrees of randomness’ but it’s all kind of new stuff. Perhaps that has some relevance here?
Your friend is correct. The term random in common usage includes events that have different probabilities of occurring.
Situations where all events have equal probabilities are just special cases. They are of interest, but random includes much more.