Responses
I have the exact same symptoms as him and everything you mentioned here applies to me too (and has so for all my life, I even struggle with remembering and recognising faces) but i was diagnosed with severe anxiety disorder and no autism. Those traits can apply to a variety of mental health conditions, including anxiety disorder, autism, OCD and more.
This is probably a weird take and I might get flamed, but if MC isn't autistic coded, he's definitely neurodivergent. The way he avoids eye contact (I know it's technically due to his face blindness), his logical way of thinking, the way he doesn't really ask for help, or feel the need to explain private things to coworkers, or he just forgets to inform them of important details, and the way he doesn't like getting touched feel a lot like Autistic traits. I see a lot of myself in him (undiagnosed but waiting for appointment and highly suspected highly fuctional Autism). He's definitely very high fuctioning, considering how he lives by himself and has a stable job.
There are also a lot more subtle things like him missing his normal life/routine and feeling like he wants it back. It's also stuff like how he can't pick-up on social cues like flirting/getting hit on or how he misinterprets these things. He also doesn't understand romantic feelings and emotions in general. It's not like he's emotionless, rather, he doesn't have empathy or struggles with thinking outside of intellect.
ANYWAY, just a headcanon.