My take:

1. The first 2 words, directly from the horse's mouth, are priceless: “He won”.

2. I read the rest carefully. And I have my own suggestions how to make the results of next election much more trustworthy. But I couldn’t find in all of Trump’s long blame-list even one item that Trump didn’t or couldn’t know before the election. 

Furthermore, there was nothing there that was outside his personal responsibility as the President to fix BEFORE the election, and not only after he found the results disappointing.

3. Let me be clear: Trump has the full right, and - from what I read here and watch there, I can say even a few justifications - to recheck and verify questionable votes.

I don’t think it would change the bottom line, but there were real problematic issues here and there indeed.

However, to attempt to do so by de-legitimizing the whole process?

To behave as the Pied Piper of Hamelin by seducing 70 million patriotic and good voters into losing all trust in their democracy?

To make U.S. democracy the joke of the century in the mouths of all the anti-democracy voices around the world?

To drive even deeper divisions into a country that is already terribly divided?

And to question the personal integrity of thousands of election and other officials, as if all of them belong to some dark Satanic organization?

Sorry, Mr. President:  this is much more dangerous to U.S. national security than any other existing or fabricated threat.

With such friends, who needs enemies?... And I am saying this mainly to President Trump: you are your own worst enemy. 

Mr. President, you lost an election that was already in your back pocket, not because Biden is such a superstar, but because you are your own worst enemy. 

In fact, you did not lose to Biden. You lost to the stereotype that you despise the most: to a woman, a lawyer, a black magic woman. And to her husband, who happens to be both a real man and a gentleman.

Unlike those fanatical haters who reject everything about you, I do appreciate a lot of the things you did damn right. And unlike those anti-democratic people who fulminate against your right to make sure that every legal vote and only legal votes count, I think it’s not only your right but your obligation to do so. But do not throw out the baby with the bath water. Even if you are sure that the election has been rigged, do not de-legitimize the whole process without having solid evidence that the voting fraud was substantial enough to change the outcome, and that the back-doors that exist in the election process have been abused only by Democrats, and not also by Republicans.

We should all behave like the smart and responsible woman who cares more about her family than she cares about her ego. Please, Mr. President: put your country first. 

 Update:

In response to what I wrote, President Trump's reply:

Thank you Mr. President. Well noted.