Or, Mr. Wiggles is that healthy. I've seen a myriad of older people who don't look their age, with little to no grey hairs and minimal wrinkling, and still able to do certain levels of physical activity, even refusing help in moving! He could have even dyed his hair and did plastic surgery - mind you, the people saying he's sacrificing kids are usually all for chopping off your tits to feel good about yourself, but apparently, a one-off character cannot color his hair for personal reasons. Fun fact: a lot of special ed children cannot cope with changes and will lose their shit at the slightest change even in a person's getup, like different lipstick or perfume (I know this because my uncle works with sped kids and he tells us his stories and what he learns). I won't put it past a truly good man like Mr. Wiggles to accept special ed kids, so he can take that into account and dyes his graying hairs and even hides his wrinkles so the special kids can feel safe around him. Of course, the chronically-online watchers won't know this or think about it because all they do is stay indoors all day and goon to Loona.