I have always agreed that standardized tests aren't an accurate representation of a student's academic skills. However, a simple article on FairTest saying that they are useless won't drive every college to say, "Hey! They're right! Let's stop accepting the SAT and ACT!"
As sucky as they are, we have yet to find another way to represent academic skill. GPAs can't be counted on because every school weights differently, every school adds its own rigor to their curriculum, and every school has teachers who may or may not curve grades and/or offer extra credit. Class ranks can't be counted on because of the aforementioned reasons, plus the quality of students varies with every class and every school. Additionally, some schools don't even count class rank.
Sadly, standardized tests are the only unbiased and reliable way to assess students' academic abilities in comparison to other students. Whether or not they are considered "unnecessary" can't change that. What can change that would be much stronger government regulation of curricula in each school so that GPA could be more reliable, but that would take a way a lot of the states' rights in their own education systems. Reading someone else's opinion that states the opposite isn't going to change this.