Who is responsible for the pump from $0 to $30, who for the one from $100 to $1200, and who for the one from $400 to $20 000? As far as my memory serves, your elon-melon was not interested in Bitcoin then, nor were the other rich people who discovered it only 2-3 years ago. The whole story about one man being responsible for the new ATH is just proof of how much people think for themselves, and how much they are influenced by the media that serves them their version of the truth.
A new massive bull run has always followed a halving, and there's no reason why it shouldn't happen again - regardless of whether some billionaire uses it to promote himself.