It's not good to them. They are not "trying to ruin" anything. The numbers show this with the fact people are not going back to watch it again at nearly the numbers of the previous movies. I thought it was amusing and fairly entertaining but as a transcendent movie that captures intrigue, respects characters, introduces interesting new characters, creates compelling storylines it simply doesn't stack up which why I wont see it again. I'll go to the next one with hope they make a better movie but my intrigue for StarWars took a huge hit. I have seen every other movie multiple times, even the prequels and had plenty of issues with them too. I remember having hope towards the end that Luke staying on the island, the payoff for him down the line could be worth the issues I had with the movie so far. Then... the force projection and he turns into the force because he was tired....I pointed out earlier that Leia was raised by an adopted family with a fake name. Luke was raised by his known relatives, with his full Luke Skywalker son of Darth Vader name, next to the last living Jedi Knight, next to Jabba the Hutt on the bounty hunter center of the galaxy. Nobody has a problem enjoying Luke Tattooine scenes.
Lifelong Star Wars fan, collector, toy designer as a career now, the whole nine yards...but some of these fans are doing their best to ruin the fact that after 3 decades of waiting we finally have a few new good (not perfect) Star Wars movies.
The Skywalker name I agree, it was clearly put there like that because the story was just being told for the first time and wanted the audience to follow along. In this age, that probably would not have been done (I would like to think). And to play devil's advocate, almost 0 people knew Vader was Anakin Skywalker so who would report what to anyone? Vader only found out about Luke by sensing the force and hired Boba Fett to investigate Luke after A New Hope.