Genuine Celebration of Easter.
In spite of the terrible quality of the image, it is obvious that this elderly man places a high level of importance on the holiday of Easter. Because I can’t think of any other possibility, I’m going to go ahead and make the presumption that his Easter-themed clothing and accessories were chosen on purpose.
To restate the question, did he arrive at Walmart already dressed in this manner, or did he put together this ensemble using materials that he purchased at Walmart? If the latter is accurate, the workers didn’t appear to have much interest in stopping him, which is concerning.