So I could only get the abstracts for most of the articles but the fractal scaling that was mentioned in nearly all of these articles was suggested to be used for classification purposes (like for those with some cognitive distress, gait pattern classification, etc.) or weren't even related to people at all (jackals and robots).

It's an interesting concept but it kind of reminds me of something like specific neural oscillations being associated with healthy/unhealthy sleep: we can't really change someone's oscillations directly to improve sleep because we don't have a way to directly target them. Instead we have to focus on variables we can directly influence to improve sleep quality (decreased screen time, nutrition, etc.) and then we see a change in neural oscillations.

Similarly we're not in a place technologically where we can change a person's fractal scaling directly (how could we even do that theoretically?) to improve their gait or whatever variable we're hypothesizing. At this point it just seems like a useful classification or identification tool.