I generally like your comments.. usually they have a lot of thought behind them. But this is pretty stupid.There’s a big fucking difference between discovering you may have stopped your parents from meeting and learning they got incinerated.
Back to the Future was intedned to be a witty teenage adventure with a dash of uncomfortable romance, a dash of sci fi, some memorable characters, and something that will p[lease young audiences in particular and most other audiences as well.
Star Wars (1977) is a flash gordon type space adventure, with a bit of a western feel that turns into zippy action film with rescues and escapes and spaceship action, presented in a way that seems new and fresh yet familiar, where the hints of backstories and histories give it a bit of depth,, but the film has punch to it that will please most audiences.
Whether on purpose or on accident, these films knew what types of films they wanted to be. They knew their audiences.. targeting young people, but still alluring to other kinds of audiences. As a stand alone film or even a trilogy, people would rarely complain that Luke's action or reactions were realistic .. because they were realistic in the context of the type of story they were telling.. maybe he paused for one or two beats in the story, but these movies were ones that always pushed forward. But today so much emphasis is placed on heavy continuity, making everything work out, and having every action properly justified by a completely realistic look at character.. As a result, people would even complain about the original film not being "deep enough"