This is not totally correct.

1.  They were hired as civil servants
2.  They were presidential appointees by Obama; as such they tendered their resignation
3.  The new president could have chosen to keep them in their posts; apparently he did not
4.  They could have continued, as they are civil servants, but apparently they did not wan to

The gentleman who was hired in 1973 (I was 3 years old) deserves to retire if he wants to.  The others deserve it as well.

This is not a big deal.  People leave jobs all the time.