Something related to your area of expertise that has a physical dimension to it. Like actually having to physically be doing something for SMM.

If you're upskilling be sure to think about this physical factor. For example in the IT sector embedded software engineers have a leg up on general software engineers because there is a physical component to it which is hard(er) to automate away.

If you're thinking about continuing the SMM way then be sure to specialize in more abstract/unconventional ways that add a physical dimension to it. So not just merely thinking about typed text through social media or written strategies.

I'm not an expert on marketing though so you yourself will have to think and find out on your how own how to navigate this disruption.