I cheer your optimism, but the question shouldn't be "Does Trump really represent a threat to the overall health of the Republic as the op-ed states?" Whether Trump truly is such a threat is the ultimate question, and it may be impossible to know the answer before he does something catastrophic.Does Trump really represent a threat to the overall health of the Republic as the op-ed states?
By stating this, isn't the author exaggerating his importance as a resistor? Wow look at me, I am sticking my neck out to save the Republic.
Having said that, I would like to believe the administration does have a good many people willing to stand up to Trump and perform their duties with the interests of the country foremost in their minds.
Finally, how important are presidents anyway to the health of the Republic except in matters of using our military power? The Republic was great when Trump took office and will continue to be great in spite of him.
The more important question should be, "Is Trump so erratic, self-contradictory and hateful that reasonable people can believe Trump to be such a threat?" I cannot imagine any other President has personally created so much chaos, uneasiness and inefficiency in his office. Trump is motivated solely by ego, power and revenge and publicly brags about how non-Presidential he is. He's doing nothing to lead by example or instill confidence that the needs of the population as a whole will be met by his administration.
In contrast Nixon, for all his wrongdoing, respected the government and played by most of the rules. Trump is far worse.