Reviving the old thread, finally changed the plugs at 80k.
https://bobistheoilguy.com/forums/threads/17-civic-1-5t-6mt-spark-plugs-80k-miles.386857/
https://bobistheoilguy.com/forums/threads/17-civic-1-5t-6mt-spark-plugs-80k-miles.386857/