you are right because the film industry advanced so much that not the acting is the main attraction of a movie , but the special effects, so they do not need very good actors, just famous ones who can sell the movie.
Honestly, when i read title thread on the Dashboard I thought you were referring to a real "star" in the sky . Talking about hollywood star, in some point I think so but on the other hands they are still fresh with the new generations. Teenagers still love and idolized hollywood which is it should not be. But some of them are still doing and their movie are still impressive. But with the latest technology some of the movie were seemingly unbelievable and too much but we know that it is only entertainment, that's why it is okay it will bring our imagination to the higher level of thinking.