When internal employees complain, the regulators are compelled to investigate regardless of whether the person in charge has a beef politically with the executive body. Otherwise, it would be an incentive to revile the government if you know you are not in compliance with any regulating body.
Not suggesting that the allegations are untrue, just that the timing is politically expedient. Neuralink has been in the news before about animal treatment (Feb '22).. and it was not as big a deal in the media then. For the issue to resurface now is...interesting
I would argue that this might also have been due to Neuralink recently announcing their updates where a monkey was shown to be operating a Neuralink device. Remember, Elon Musk has been politically controversial wayy before he got hold of Twitter. Since 2020 when he flouted Covid policy, he has been controversial politically. So since that time, there is a possibility that any regulatory action against him would have been considered politically expedient. Hence, one can argue instead that it is politically expedient to claim any action against him to be policially motivated.