He also isn't subversive. Subversion would've been to kill both Rey and Kylo in Palpatine -2.0's palace as a surprise fuck you; then it turns out the last Jedi was Finn all along, and he has to build from the scraps as several of the crazier Knights and Hux' subordinates forge a variety of dangerous warlords to seek FINAL VICTORY. Subversion would've been to have them both fall to the dark side after killing PalpyClone, again setting it up. Hell, if the film ended with both sides being fucking dead and then someone minor from either movie gets the nod to build shit back together? That's subversion.
You know what truly would be subversive? Imagine if Kylo Ren was a loyal agent of Luke Skywalker this whole time. Snoke refused to let him get close until he proved himself by killing his father, but in a surprise twist, Han agreed to sacrifice himself so that his son can get close enough to Snoke in order to kill him. Oh, and make Snoke a Muun, and have him be Darth Plagueis. Having survived Palpatine's attempt to kill him, his body is ravaged and elderly, but still strong with the Force. But as a result of his physical impairment caused by Darth Sidious trying to kill him, he only lets close confidants, bodyguards, and trusted allies get close. He used his mastery of the Force to mind-rape the Imperial Remnant hierarchy into serving him and forming the First Order.
So when Kylo Ren kills Snoke, he then contacts Luke and tells him that the mission is accomplished. All that crap about Luke telling Rey that he tried to kill Ben Solo and the latter fled was just nonsense; a story fabricated by Luke and Ben Solo in order to get the First Order to take him in. General Hux then becomes the new villain as he rallies the First Order to hunt down Rey and Ben, but a large New Republic fleet led by Admiral Ackbar and the Jedi pops out of nowhere, since Luke's Jedi aren't really dead. Luke is at the head of this fleet, congratulates Ben on a job well done, but Ben says the true credit belongs to his father who sacrificed himself to make this happen.
Rey is completely flabbergasted at the fact that both Skywalkers lied to her in order to kill Snoke, but she fights alongside them anyways. The New Republic seizes the Supremacy and defeats the First Order. They capture General Hux, and story ends with a happy ending as the New Republic announces its victory. Or does it?
Before the New Republic can finish its victory broadcast, news comes of a Star Destroyer destroying an entire planet with an energy weapon. The heroes interrogate Hux to determine if the First Order had anything to do with it, but Hux confesses they have nothing to do with it, but there were some Imperials who didn't align with Snoke, who could be the culprits.
A second Imperial Remnant that wandered far from the First Order, is led by Darth Tenebrous, who managed to escape the Force netherworld with the help of Sith spirits. He took control of a renegade Imperial faction, and to mock Plagueis, he named them the Final Order. The Final Order, like in Rise of Skywalker, has red Sith-themed soldiers and Sith Star Destroyers that can blow up planets, but instead of a thousand of them, Tenebrous barely has a hundred, but they come equipped with cloaking devices, so they can hit-and-run the New Republic into oblivion.
Darth Tenebrous built this fleet while the Jedi and the New Republic were distracted with Plagueis and the First Order, and after the fleet destroys its first target planet, Tenebrous makes his big announcement that he can destroy the New Republic with his new stealth fleet, and the New Republic, over Luke's objections, surrenders to Darth Tenebrous.
In a hidden base far from prying eyes, Ben, Luke, Leia, and Rey have to enter into a Force trance to figure out where this new threat is striking from. Meanwhile, Finn runs across a clan of Mandalorians who refused the surrender order, and they manage to catch one of these Sith ships unaware as it was preparing to destroy a rebelling planet. After a brutal, gruesome battle where three quarters of the Mandalorian clan die in the proccess of taking down an entire legion of Sith troopers, Finn and the Mandos manage to board and take control of the ship. Now the good guys have the means of destroying the enemy stronghold, if only they could find out where it is......
That is how you do proper subversion in a story. I just fixed the Sequels for the umpteenth time.