Wow! Ignorant is clearly not a sufficient word to describe this meme.
The launch was scrubbed due to thunderstorms. That's a bit more severe than "some rain."
Musk did not get where he is today by needlessly risking the money that would have been lost due to a lightning strike on his rocket once launched.
And that doesn't even begin to consider the possible loss of human life.
My $0.02, Kevin, is you should reconsider your opinion about this.