Funny that the kids and young adults/adults on the Spectrum all hate this show, but the PARENTS OF THOSE KIDS...like it! I have one...around many.
We live through this and the kids just power through their days like the world revolves around them. That's the spectrum. How many times I've heard a kid tell the parent they're "an idiot" in a crowded place (many) or clueless to social issues and friends NOT REALLY BEING FRIENDS though they think so...all these issue almost perfectly shown in this series. The kids rating this so low...that's exactly what we live every day. They miss the point and go into "stuck mode" and its a challenge.
If those on the Spectrum rated this high, might be sign its less truthful a series to be totally honest. Many would envision a series like "Friends" more realistic. We know better.