With that big of a demographic overlap between Nintendo fans and Justin admirers I think it's pretty bold to assume that he doesn't like it.
The fact that he hasn't yet requested speedy deletion of his account is proof of that.
I think you should respect other people's life choices. And seeing as you are a Nintendo fan yourself, maybe it's time for you to let Justin in your heart too.
If you demand respect or gratitude for your volunteer work, you're doing volunteering wrong.