From the comment it's hard for me to understand exactly what you experienced, but Architecture is a very specific roll within SAFe. One of the biggest aspects

From the comment it's hard for me to understand exactly what you experienced, but Architecture is a very specific roll within SAFe. One of the biggest aspects is to avoid "Big Up Front Design" or essentially over-engineering things when you probably don't have all of the information yet. This carries across multiple aspects of SAFe and usually creates conflict in people who want to be handed a complete specification. For some people, it's a mindset change. For me, it makes sense. I don't want to be handed a complete spec written by other people. I want to be handed a best guess with requirements that I, as the person who will be implementing it, can refine, provide feedback, ask questions and help get to a better implementation. It assumes the people closest to the problem space (you) will have the best understanding of how to solve the problem.