Tenet is the pinnacle of Christopher Nolan's technical skill. Specifically technical because the plot here is not the main point. The director has collected everything he could in the new picture – the play with time, which has reached a new level, his own James Bond – John David Washington, and even an almost complete rejection of special effects: who else can boast of the destruction of the Boeing 747 for the sake of shooting?
The non-linearity of the plot is the Tenet's weak point: it seems that Nolan spent 200 thousand dollars to show the viewer how stupid he is. But at the same time, he showed all his talent and squeezed everything he could out of the team. The scenes were not inverted – the actors really had to play the scenes of hand-to-hand combat backwards. The golden cast also complements the entourage: Robert Pattinson as Neil, who is neither a master of physics nor an alcoholic art historian, or the heroine of Elizabeth Debicki as Kat who is willing to sacrifice everything to protect her son. Unfortunately, all the characters are unveiled – we know nothing about the main character, except that he is a Protagonist in the whole story (and we will learn it only in the last two minutes of the film). What kills even more is that the motive of the main villain – Russian, naturally – seems floating and stupid. Destroying all the humanity from the future with nine very expensive components is a too fancy way to destroy everything because "all people are moral freaks".
If we evaluate Tenet as a cinematographic performance, it gets the highest score. As a composer, Ludwig Joransson pulled the trigger and did a great job – when the action scene needed a techno rave, Joransson gave it (personally I have been listening to the soundtrack for a week without stopping).
Tenet is not not a bad movie, it's just not for everyone. If the picture is as important to you as the plot, or even more important, it is for you. But if you're not ready to spend a day after watching the film trying to understand the physics, chronology and three lines of the story, it's better to pass by.