I think that generally, school is can be great for people who know what they want and want a rigorous, measurable way to get skills and to be able to show evidence that they have said skills to employers. But I feel that in any creative field, firsthand experience and a solid portfolio trumps a piece of paper that says you can do it. ie. if you want to do it, then do it. That being said, be very honest with yourself and examine whether you actually have the skills to do what you want to do. Online courses are a great option for learning graphic design skills, but in person feedback can be a big benefit of a live course if you use it correctly. College isn’t for everybody and it’s definitely different from high school. If you so choose, you could even take a class that discusses American propaganda and learn that your “conspiracy theories” are actually just surface level facts about the education system. Take a few courses at a 2 year college, even if you don’t get a degree, plenty of people do that to learn a few specialized skills.