It's not a really big deal in the context of how twisted the current American government is, and in fact the Surgeon Gen. has little official power. The main point is that his firing is yet another example of the Trump/Bannon 'purge'. Dr. Murthy was on thin ice because he was a) born in the UK and b) brown. It would be odd to attack H-1B visas for 'foreign experts' and have one such heading up a central agency, right? And of course, in-line with surrounding himself with lowly minions, Trump & Co. appoint a mere nurse as the Surgeon-General, and you can just bet that she will do whatever she is told to do all...the...time. Bark lassie.