

I would say they do care, if their ratings are down then their party is likely to win elections in the midterm. If their party is out of power in the house or senate after the midterm then the president loses power since the other party is less likely to vote in favor of things the president wants, and more likely to launch investigations into the president and administration officials.
There’s also the fact that you want your successor to be from your party because 1) it says you did a good enough job the people wanted more of the same, 2) your successor will most likely continue things you’ve started and help secure your legacy.
In the end remember that most politicians are vain power hungry people, having low poll numbers at any time could hurt their egos and their ability to wield power.
Same, I made the switch about 9 years ago when I was self-employed. Then I took a job with a small company running windows and it sucked. Now I’m 6 years in with my current, a mega corp, and they are all in on Microsoft. I’ve been so aggravated with the limitations of Microsoft products when I could get things done with a FOSS product in no time. Of course IT blocks FOSS installs because of corporate policy…🤬