If you are somebody who wants to win an election, whose vote are you winning by proposing and/or signing a bitcoin ban?
It's not like Bitcoin has a CEO that you can point at in the Forbes billionaires list and claim that you are going against him.
You have to explain and present to people the coins per wallet distribution statistics and convert it to dollars to get to the topic of inequality, then from there trying to equate Wall Street to Bitcoin.
It's not easy, even for a socially competent person, you lose the room and people's attention quite easily. It's far easier to attack Bezos