I think announcing your young age alongside your project is important because it opens up more opportunities for others to guide you and help fuel your passion and talent. Without the age, people will assume that the creator is old enough to know what they enjoy and what they want to pursue. But with the age, you'll have people with more experience saying "Since you obviously like X, you should look into Y and Z. Here are some great resources on those topics." Advice like that is invaluable and we should encourage scenarios that result in it.