It's an expectations thing. A lot of people were upset by the removal of the snake reflection back in the day, heard that Spielberg made some mea culpa statements that altering his films was a mistake, saw that E.T. got changed back to the way it was for its Blu-ray, and assumed Raiders would get changed back to the way it was on its Blu-ray too. These people will be disappointed--and the other changes, albeit minor, are just salt in the wound that Spielberg did not, in fact, learn from his E.T. fiasco what they thought he should learn.

However, I'd say most people including me think that while theatrical fidelity is always best, there is such thing as good enough--and this Blu-ray is more than good enough, it's very good. Just, you know, not exactly what you saw or heard in the theatres ;)

I agree, if the OT got this kind of treatment, there would be dancing in the streets. But I don't think the complainers are unreasonable, they just had different expectations going in.