mastermind
Rest In Power Kobe
I feel you.
Tate was the one who was murdered in real life, while pregnant. Manson's crew went up to the house and murdered her and her friends in that house. It was a historic event.
Tarantino exploited that aspect and put her character in the movie. Had Dalton live next door to her. Given all of that, something was bound to happen. That adds to the allure to the movie besides Leo and Brad Pitt and Margot being in it and Tarantino directing it.
And knowing what Tarantino did in lnglorious Basterds in altering history, another draw is what he would do with the Manson crew Tate murder.
You are right, Tate was unnecessary. So was the Manson aspect. Instead, Tarantino went back to his old bag of tricks. He relied on exploiting the Tate and Manson historical event to help aid his movie. Had he not, the movie would have been a thinner story than in its current form.
I didn’t mind the Manson angle and I think that was used well considering that’s what Manson did in real life.