Research demonstrates that autistic individuals can successfully employ camouflaging and masking strategies to conceal their autistic traits, allowing them to appear neurotypical to outside observers despite significant underlying neurodivergence.
The claim posits that individuals can have severe autism while presenting as non-autistic to observers. Multiple papers in the literature discuss camouflaging, masking, and impression management strategies by which autistic individuals hide or compensate for their symptoms, often leading to missed diagnoses or presentations that appear non-autistic or mimic other conditions. Therefore, the claim is supported by the provided evidence.