For the same reason that, today, you're not considered a national security risk if you are openly gay, but you still are if you are closeted and trying to hide it. You can't easily blackmail an Elon type who has no shame and whose sex and drug addictions are part of his public reputation. Jensen presented himself as a faithful family man.

Also, if you cannot comprehend that there are issues of consent when it comes to having a sexual relationship with someone whose career you can destroy with no consequences, then I seriously hope you never get a management position. Elon's boards seem to be okay with this, but that is not the norm.