That was purely coincidental. When Owen says he’s afraid Luke is too much like his father, he means he doesn’t want Luke running off on adventures and getting killed, as all the Jedi were hunted down and killed by the Empire. Even now that’s probably how the scene is meant to be read from Owen’s perspective; nothing about the scene, or the movie, implies that Owen is afraid Luke will be “like his father” by being an evil power-hungry genocidal monster, and it’s highly unlikely Obi-Wan told Owen that Anakin is now Darth Vader.

Meanwhile, Obi-Wan has pause when Luke asks him about his father because the very next thing he says is that a pupil of his murdered Luke’s father and all the Jedi. Obi-Wan feels uncomfortable and probably guilty talking to Luke about it. It’s only retroactively that we now point to and see connections where there originally were none.

Frankly, I think that will happen to a lesser degree with the ST too; in the future, kids who liked the movies at a young age and didn’t have all the behind the scenes chaos (or the loss of the Legends EU) at the forefront of their minds will read the movies as more connected than we currently do. For example, I think Rey’s vision in the cave in TLJ, where she’s surrounded by darkness and copies of herself, will certainly be read retroactively to foreshadow her dark side clone heritage, even though the scene was originally written to just mean that she’s by herself because her parents were no one.