I actually disagree for the most part. I think a large part of this trend has to do with the strong market here. There are so many buildings going up, and demand so strong, that there's always that "race to the bottom" in terms of cladding. You see similar trends in other strong markets, such as Miami. Another issue is that, as a strong market, we have a large quantity of investors who are only interested in specs, such as size, ceiling height, etc., and not architecture or cladding material. I predict that if the market were to cool down and fewer buildings were being built, there would be more emphasis on design/aesthetics/structural integrity/etc. as developers would have a much stronger interest in maintaining their brand, and the market is led by future residents rather than investors.
Unfortunately, outside of the market, the only way to alter the status quo is to enforce some legislation at the municipal level. I say unfortunately, because it is obvious that this city is completely apathetic when it comes to cladding and design and more interested in reducing heights and preventing shadowing. If not for legislation, at least give some incentive for developers to use curtain wall, but we all know that will never happen.