I never saw that episode because I basically missed the whole Capaldi era. But I know the speech. "We're fighting the suits."

You definitely should watch it, takes a bit to figure itself out but it’s got all-time classics- Deep Breath, Time Heist, Mummy on the Orient Express, Dark Water/Death in Heaven, all of the Christmas specials, Magician’s Apprentice/Witch’s Familiar, Heaven Sent, among others