Hi! I'm neurodivergent and the ML really does have a lot of autistic traits! I'm not sure if the author intentionally made it implied for the ML to be autistic or fall under the spectrum (most likely not), but regardless, the ML is undeniably under the autistic spectrum, based on what I've observed from him.
Major traits that gives me this answer is how he doesn't do well with recognizing social cues, takes phrases too literally at times, is often blunt, and needs direct communication to understand your point most of the time (just like this recent chapter).

usually when i say an ml is autistic i get death threats but its nice to see everyone so about it with this manhwa. hell yeah autism be damned my boy can work a grill