From the article

“As voters, we want to see a certain sense of calm and purpose in the leader of the Free World. Rage will make her closest advisers afraid of giving her the news she doesn't want to hear or raising ideas contrary to her expectations, though such discussions would be in America's interests. Such aggressive body language can result in staff turnover at the highest levels of the administration, leaving Americans underserved as crucial positions go unfulfilled. Axios has already reported that 92% of her  Vice President's office staff quit. The same infighting among her senior staff had caused Harris to abandon her 2020 presidential run. Tone matters for those seeking the highest office in the land. It certainly matters when Trump’s tone is one of the primary drivers of the Democrats’ distaste for him.
Harris was also blatantly dishonest about substance. Baier started with a simple question.  
Voters tell pollsters all over the country and here in Pennsylvania that immigration is one of the key issues they are looking at in this election. And specifically, the influx of illegal immigrants from more than 150 countries. How many would you estimate your administration has released into the country in the last 3 1/2 years?  
Harris never answered the question. The discussion went on for ten minutes (the most extended segment of the interview), but she never offered a number. It was utter disregard for the American voter and the Fourth Estate by the second-most senior official in the United States government, who was in charge of the border.  
We all know what happened. Under President Trump, illegal immigration levels were low because he strictly enforced policies through Executive Orders - such as "Remain In Mexico," stopping the "Catch and Release," and building sections of a border wall - against intense opposition from the Deep State and the courts.  
When the Biden-Harris administration appointed Alejandro Mayorkas as Secretary of Homeland Security, he said (on March 1, 2021): "We are dedicated to achieving—and quite frankly working around the clock—to replace the cruelty of the past administration with an orderly, humane, and safe immigration process." The result was that Biden-Harris canceled all 94 Executive Orders that Trump had issued.  
Today, we know what a disaster her policies have been. No one knows how many people crossed the border and were released into the country. [Estimates are 18 million plus].  
Her policies have certainly not been safe. Last month, the acting Director of Immigration Enforcement released an explosive letter, saying that under Biden-Harris, America had caught and released into the country over 662,000 migrants with criminal records. Worse, more than 15,000 of them were murderers convicted in their home countries, and 16,000 were convicted of sexual assault. Other crimes included 100,000 assaults, 70,000 drug violations, 90,000 invasions of privacy, and 16,000 weapons offenses.”