The only time “disorder” is really needed to talk about autism, is at the during a diagnostic assessment (in order to meet clinical diagnostic criteria). At any other point we need to think in terms of “difference” and “opportunities”.
From a communication perspective:
The diagnostic pointer of “repetitive and stereotyped speech” during diagnostic assessments becomes attempts at engaging in conversation using known information in everyday life. It is different from what might be socially expected but we should look at the intention (engaging in conversation? seeking reassurance? or speaking about something enjoyable to self?).
The opportunities lie in supporting the person to develop more language for conversation and participating in interactions where needs can be met and conversation can be enjoyable and effective for both.