Do redditors put "/s" after sarcastic posts because reddit is full of aspies who will take things literally?

[ifyouwannabemylover]

getting that impression

 

[hebbewem]

It have millions of users so some redditors wilo be autistic but only a small minorty is

 

[Harold O'brien]

It's to avoid downvotes because their personal esteem is tied to Reddit karma