Dwight did get his own back at times

Not autistic, just overbearing, strongly opinionated and has a strong desire to have power over others even if it involves stepping on others to get it. Hence, why it's so funny he gets pranked. Many times unpleasant people are just unpleasant and don't have a "condition" to justify it.

Yeah as an autistic person myself, I don’t think Dwight is autistic. There’s a lot more that goes into it than just bad social skills.