Tesla isn't an investing firm. They don't even really have much in the way of acquisitions yet. Tesla would have to do something pretty blatant to really piss off the SEC. Elon's $420 tweet was greeted with a slap on the wrist precisely because "you're new here, aren't you?".
The better analogy would be if SpaceX pissed off the FAA.
The better analogy would be if SpaceX pissed off the FAA.