It seems from your writing that you are someone who knows what you are talking about.
I am not an Architect or know a lot of architect theory. In my quality as another man in the crowd (without a studied opinion) and as someone who loves Porto I think this new building means healthy refreshment for Porto’s architecture. In the past, lots of similar things have been said about the Casa da Música that you mention. I admire the works of other local architects (Siza, Soutinho, Tavora) from Porto School but I think that these new experiments add up positive energy to the city and hope that they encourage new architects to look into other possibilities. Porto Can have Siza’ (Alvaar Aalto kind) school and these new tendencies together. I think they live along together.

The two buildings are 2 km away from each other (tops).
This Building, the Vodafone headquarters, behaves like it is on the same scale as Casa da Música, perhaps not recalling that, in fact, this is a private equipment and not a public one…
And, if you actually could see the area where the building is built, you would see that it simply doesn’t fit. It behaves like an alien, screaming for attention.

Of course the purpose of Vodafone was fulfilled, but surely the interests of the city of Porto itself weren’t…

This really looks no more than a totemic architecture, whose purpose is just to deliver “something new”, even if that something new isn’t that new in fact, and just some show-off by a private company. (the last two images are taken from spaces that no one that doesn’t work in Vodafone will be able to see…)

But of course, in the end, one can do nothing but be mesmerized with these photos and, what’s more, all the publicity the building gained will make it profitable…