MrEnter doesn't seem to realize what Standardized tests are; if a test is standardized, all that means is that it is fair, everyone has the same or equally difficult questions and that they are graded the exact same way. Whether or not these tests are being misused is a different story, but standardized testing as a whole should not be removed. This is a common error a lot of people make and I could give MrEnter a break on his research if this was the only error he made, however it is not.
While learning styles are an important thing to consider, they aren't something that are entirely locked in place. In other words, you can learn how to use different learning styles more effectively, something which is necessary to function in every day life (you can't learn EVERYTHING you need to learn with musical-rhythmic intelligence, for example.) Generally speaking, the most effective way to learn something is to teach it to someone else, but it isn't always practical or reasonable to have students try to teach everything they learn to someone else.
Easily the worst error in his post is his idea of grouping children entirely by academic skill as opposed to age. Children of different ages have inherently different needs. A child should not be expected to use hypothetical/abstract thought needed for higher level writing and math, their brains don't develop the ability to understand these ideas until adolescences (which is why students start to learn algebra in middle school.) This has also been shown to be negative for the advanced children socially as it would obviously be difficult for a child to be accepted by an older adolescence crowd.
If we assume that he only meant within the grade level, then this would still be wrong. Although it works well for the academically advanced children, it would be terrible for the academically challenged children as they would be labelled as "the dumb ones" which has a large number of consequences such as lower expectations from teachers (which has been proven to lead to lower grades), if it is bad enough then learned helplessness can occur when the student believes they cannot succeed so they stop trying (due to the lower expectations), being stigmatized by peers for being in the "dumb" classes which can lead to being unpopular and having worse grades, and crowding both students who genuinely struggle and troublemakers who don't try together, this leads to the troublemakers learning new ways to make trouble and teaching the struggling students how to misbehave. It is much smarter to integrate struggling students with average students as it can avoid quite a few of the issues I mentioned (not the expectation problem, although its not as bad without the explicit label).
A few of his points are accurate though; although some schools are making the push towards better technology, teaching children how to use technology is important. MrEnter is also correct on a zero tolerance policy on bullying and that current bullying prevention programs are not effective (although I am doubtful on whether or not he actually researched this,) he is also right about college education in this scenario, but schools do need to provide an alternative to colleges such as trade schools rather than leaving students with low paying jobs. The other points he mentioned are more quality of life nitpicks which wouldn't drastically improve the education system in the United States.