It is generally a bad idea. Eventually, it will make one so mentally exhausted to the point of having a meltdown or shutdown at which point all the autistic traits one is trying to avoid showing everybody will pour out in abundance.
It can cause all types of mental illness. The constant battle to hide that you are a "flawed person" will make you depressed. Many try so hard that they lose sight of who they are to the point of derealization and depersonalization.
I am not saying never "fake it to make it" just do it in moderation and always be aware that this is not you and you are doing it to gain something.
_________________
Professionally Identified and joined WP August 26, 2013
DSM 5: Autism Spectrum Disorder, DSM IV: Aspergers Moderate Severity
“My autism is not a superpower. It also isn’t some kind of god-forsaken, endless fountain of suffering inflicted on my family. It’s just part of who I am as a person”. - Sara Luterman