The "gankers", at least the vast majority of the self-proclaimed ones I've encountered here don't fit that profile. If they truly enjoyed clubbing seals in paper ships just to feast on their tears, they'd be colossal idiots by offering as much help with ship builds and evasion techniques as they demonstrably are. Why on Earth would alleged sadists be interested in making their victims better able to avoid them?
I know people that do both. They grief paper ships and they offer help to get better at PvP. Both can be, uh, "rewarding" activities on their own.