YouTube is reporting some results from an assessment of its activities. The platform noted significant growth in the number of channels generating more than $10,000 a year. The past year was also punctuated by the success of Shorts. We take a closer look. Up 40%. That’s the increase in the number of channels generating more than $10,000 a year in 2021, according to an open letter from YouTube’s CEO. The 40% increase was observed compared to the year 2020 and was drawn from all across the world. The exact number of channels in this category, however, has not yet been released. Susan Wojcicki w…