It's hard to say. Different comics might present characters differently. You'd have to look closely at the character's portrayal and storyline to determine if Sussie Putnam is trans.
I think it might suggest a call to safeguard or support comics featuring trans elders, but without more context it's hard to say for sure. Maybe it's related to raising awareness or promoting acceptance of such representations.
The comic could have a theme of breaking stereotypes and advocating for equality and understanding. It might show the personal growth and empowerment of the trans man as he navigates through life's ups and downs.