I'm not sure that using C# inherently turns you into an architect. You can write the most direct and legible code in C#, just as you would in other languages. I think it is a mistake to conflate the two. In fact, I've seen it.

I am sure that as you work your way up the Objective-C chain, you will run into patterns and practices that have brought the best results over the years. They will feel burdensome after a while. At that point, you will be right back where you were with C#, except in Objective-C and will be happy to be a beginner at another language so that you are free of the burden of experience.