Since he ignores the escort keyword does this mean that in addition to attacking squadrons that would normally have escort that he can also then cannot be escorted similar to how Luke can't take advantage of effects that modify damage to shields>

No, as he only ignores it on enemy squadrons.

Friendly Squads escort will apply to him normally.

Furthermore, although he is ignoring it on enemy squads, the enemy still has it, so they can still utilize other escort related rules like Biggs as applicable