Quote Originally Posted by Caitlyn View Post
Reshade is neither a grey area nor a mod (its a post-processing injector). Its officially allowed to use it (from 2013):
HEY! You found that post! (The forum search wasn't turning it up for me when I looked for it, so I couldn't link it when I referred to its existence earlier. I'm gonna save the dang link this time.)

But yes, the quote matches my recollection, that they basically said "Shader Injection is okay with us, go have fun, but if it breaks your game you're kinda on your own to fix it."