If people don't want to get ganked they have 2 other mode options.
They certainly do. The problem is, many of those who are doing this, also campaign for things like open only and the removal of the other two modes or restriction of features in those modes.
Its a shame that has to be the attitude though. Don't want to get ganked, don't play in open. People having to avoid certain modes due to a small number of players who delight in causing negativity.
It really is a compelling case for FD implementing an PvE Open mode. Let the gankers rot in their own stink and then watch them complain when the only targets left are few, far between, and actually competent and can kill them right back.