Why don't SJW comic pros shill their own work?

Why would a professional creative get offended when asked to shill their own work? Only explanation I can think of is that they don't actually care. I care, and I can't shut up about what I'm working on!

Intro/Outro by Walker Trips:
www.youtube.com/channel/UC71c43_lOSAOMPOKj0MpgCQ

Gameplay from Sword Art Online: Fatal Bullet
store.steampowered.com/app/626690/Sword_Art_Online_Fatal_Bullet/

Thumbnail from Blade Devil!
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