With all of the US gun deaths yearly, having a few names in common with some movie produced at any point, it's honestly pretty easy make some comparisons.
Especially when that's all im common. You have the admittedly very close Charles Kirk and Charles Kirkland, and there is a character named Tyler. That's everything fully correct.
Let's go over differences that the OP either glosses over or distorts to help their point.
1. Kirkland was shot in the chest multiple times.
2.The Isreal connection isn't why Kirkland was killed. He was killed because he knew about faked tests and a faulty missle defense system. Even if it was a system sold to Isreal that would keep the movie character way more pro-Isreal, since the system didn't work, so he wasn't wanting to sell Isreal faulty equipment.
3. Lincoln Tyler wasn't the sniper in the movie. Would also say if they were so on the nose for Charles Kirkland -> Charles Kirk, having Lincoln Tyler -> Tyler Robinson seems a big departure.
4. The sniper was a Palestinian terrorist (Tarik Ben Rabat) who the bad guys contracted because he's not pleased with US helping Israel. But that's the motivation for about every Middle Eastern terrorist character for decades, so that's hardly unique.
The only questionable point is All of the in movie posters I've seen are craaaap quality, but looks more like an 18 or 19 than a 10, but again. Bad quality. Not seen the movie to know if they state a date to settle it.
So, yeah. If you have some very, very vague connections and then lie about more things to match your story, suppose anything could be part of this "Revelation Method"
No wonder they think the evil "Them" are so powerful, anything can be claimed to be their plan.