The ‘spectrum’ terminology comes about from the field of peychology only being able to attempt to analyze … basically, ‘symptoms’, behavioral profiles, phenotypes, and also the field of psychology constantly changing how it does those analyses as well as categorize observable behaviors into conditions/disorders.

What this new understsnding is pointing toward is that there is an actual, identifiable, genomic variance of mutation clusters that actually explains how differences in that spectrum of ‘symptoms’ actually work, what actually causes which ones.