Ya thats MY opinion man, "i read about it and i dont need it". I dont know why u find it "smart", is just my opinion which u dont seem to get ur head around.
Substance does not produce shaders, it produces textures., either u insist trying to make a point about it or not. If u cant implement the falloff/fresnel/complex fresnel which is the most important ingredient in shading, then its solid purpose is texture creation. Its a very nice program for other things but i dont get why u try persuade others that is so useful in their pipeline. Do they pay u to advertise the specific program or what?
My point here is that people get confused and start thinking technical while they dont have to. Developing a critical eye is much more needed rather than trying to understand terms like BRDF and diagrams with % of reflection for each material. We should think more like artists rather than technicians.
Concluding, lets not waste breath, is not rocket science: rendering is dead simple and str8 forward nowadays. Even a noob can make descent realistic renderings, is not a skill anymore is just a matter of $$$ for having gpus. And especially in arch vis where u have a single frame.
My 2 cents.