Why do we need MUX?

I'm curious, why exactly do we need MUX in the world of cryptocurrency and finance? What problem does it aim to solve that's not already being addressed by existing solutions? Could you elaborate on the unique value proposition MUX brings to the table and how it could potentially revolutionize the industry? I'm interested in understanding the rationale behind its development and the potential impact it could have on the future of digital currencies and financial transactions.