Tenet on HBO was enjoyable, an above average popcorn flick, but some of it just didn't make any sense to me. I don't mean the slingshot time travel, but the fact that the villain literally wanted to kill everyone including his son if his life was ending.
When you have such a no holds barred over the top megalomaniacal villain, and Kenneth at his best chewing scenery mode, I at least expect 007 to come out and save the day.
As others mentioned, Nolan is interested more in his mind-game/conundrum byzantine plots than any people in his movies. The "concept" IS the film for him,