Again, I think you are missing the general point, and I am not sure how I can make it any clearer.
Letizia has a job, she is the Princess of Austrias and its her job to represent Spain at home and abroad. She should dress like she is working.
Would you respect a business person who came to your place of business to sell their product, if they came dressed casually...in a pair of slacks, a top and a sweater? Would you hire someone for a job if they did the same (unless its a place with a casual atompshere like Facebook or an internet start up).
You might, but I wouldn't and I let tell you why. Because they didn't think my business or my time was important enough that they didn't dress appropriately in business attire. They could have delivered the best presentation, their company could have the best product, etc. but it would make me question their professionalism, etc.
All this that the people in Spain dont' care what their royal family wears is probably true. But as Susanna Wynne said...its all about perception especially at a time when governments are teetering on the brink. If royalty acts and dresses just like you and me...why do we need them?
That's all I am going to say on the matter. I am not a Letizia basher, if you look at my posts I don't just come here to spill dislike on Letizia or what she wears. I would say the same thing in any forum...its objectivity. Yes, there is the problem when royals become the clothes horse but there is a happy balance. And Letizia in her casual clothes at royal engagements is not it.