AirBNB's CAN-SPAM violating email was clearly unethical. A media company showing up on Facebook more than you would prefer is, at worst, mildly annoying. There's an important difference.
Ethical people do not need to leave Silicon Valley. Dishonesty is not prerequisite to success. Your claims are wrong.
Again, you're implying things that I simply didn't say.
>A media company showing up on Facebook more than you would prefer is, at worst, mildly annoying
You're right, that's not spam, but that's not what I was referring to either. I'm not going to write a massive explanation here of the specific Facebook spamming techniques employed by Buzzfeed et al, but suffice it to say that they are actively and aggressively spamming to "prime the viral pump" with certain stories.
Buzzfeed spams the crap out of Facebook. Eventbrite & Vice had some spamming issues in the beginning as well. I'm not sure about Snapchat's growth story - they may have been a rare example of natural growth, along with Google. Most of the rest of those you're talking about aren't really the kinds of pure internet plays that are relevant to this discussion. No amount of spamming would have made Xiaomi, Palantir, SpaceX, DJI, etc any more successful, so they didn't employ these techniques.