I have no problem with The Commander in Chief sending a form letter that was electronically signed. Besides the fact that he has many other issues and problems that I would rather he attend to as both the CiC and POTUS, his record would suggest that hand-signing a letter would be the height of hypocrisy.
The attempts to cover what should have been a non-event (even though all the letters were word for word the same) is what frosts me. And speaking of word-for-word letters, there is a long and honored history of both the wording and the reason why those words are the ones used. Basically it boils down to everybody is treated equally - if there is anything special it will be handled by a commendation (medal to you non-.mil types).
stay safe.