I don't think he was on about night
But you could do 2 daylight and 1 night to get the tick for both.
The instructor doesn't need to be night current because on a instructional sortie the student is classed as flight crew not pax.
I can never understand the get out of jail card for having an IR. The first one of the season after 6 months not landing at night can be very interesting. And I really don't see any skill set that the IR gives me that means I can judge dropping an aircraft into a black hole with sod all clue where the runway is and when we are going to hit it until I get my eye back in.