Assuming Daniel is neurodivergent do you think it is okay to give him the nickname ‘Dim Dan’?

I see it pointed out here all of the time that Daniel is either ADHD or Autistic. Especially considering his father is diagnosed ADHD it would make sense for it to be passed down to Daniel. I feel like considering his likely neurodivergence the nickname ‘Dim Dan’ is actually quite cruel, especially if the behavior that seems ‘dim’ is truly the result of being neurodivergent. It kind of seems like a potentially ableist nickname.