I can see a lot of people saying "but would a guy with so much money become a drug trafficker?"
I was thinking the same thing and after thinking about it and checking the facts that we know of, it is possible that he was not a kingpin style drug trafficker but must involved in a minor way. The police can charge a person with drug trafficking if that person simply gives someone a valium. There are many levels of drug trafficking, but they are all called "drug trafficking"
They said that his DNA was on a bag of meth and an LSD tablet. Does this prove he was trafficking the stuff? Maybe it was his own personal stash. He was living with a younger guy who has ties to bikies. It could be possible the other guy was doing the trafficking on the larger scale and Bomber was just tied up in it through personal use. In other words, Bomber was not trafficking anything himself, but getting his supply from this guy and turning a a blind eye to what the guy was up to - hence he can be charged for trafficking because he allowed it to happen in his house and didn't go to the police.
It will all come out I'm sure, but I wouldn't put him in the same category as Pablo Escobar just yet. Cops will charge people with anything these days, and media loves to pump up a story.