From the empire perspective, all capsuleers are intrusive. Miners technically steal ore that the empires would mine. Missions involve fighting other empires etc. Capsuleers construct structures that compete with empire stations.
Capsuleers killing other capsuleers is beneath the notice of empires. They lose nothing when a capsuleer freighter gets ganked. It has nothing to do with them.
This particular line has more to do with nerfing hi-sec/buffing low-sec rewards than nerfing pvp.