I don't drink coffee, and I don't have any other habitual sources of caffeine. However, I'm 22, and my morning de-blearifying process may not yet need to be as heavy-duty as that of an older person.
"It's no big deal because I choose to focus on the code, relax and roll with it."
It's cool that you can take the prejudice you are dealt, but some people surely get worse than you. I'm not dismissing your experience, I'm just pointing out that it is merely YOUR experience. You (like everyone) can't speak for all minority groups.
Wow, this is a surprisingly non-terrible way to generate revenue. Good job, Tumblr. Ad placements and premium membership would have pissed off a good chunk of their users, but this is kind of a nice compromise.