it's not walking per say, but the obsession with walking combined with editing their pics to look thinner and the very, ehm, 2000s ana aesthetics as well as some strange eating habits... for a lot of people suffering from ed constant movement becomes a tool to "control" their body, when i was pretty deep into mine, i used to pace in my room instead of sleep until i had 20k steps and had a break-down because i couldn't walk when i had covid
but you enjoying your walks isn't of any indication that you have an eating disorder dw