Yes, language absolutely matters
Leaders have a responsibility to set a good example for the American people, and to project disciplined and sober leadership to the world.
When Ronald Reagan was President, he had such respect for the institution that he loathed to even take his suit jacket off when he was in the Oval Office. A decade later, the incumbent President demeaned the Oval Office by carrying on a sexual relationship with a White House intern young enough to be his daughter in the same room where President Reagan loathed to even remove his suit jacket. While President Clinton's deeds were done in secret, the current President thinks nothing of openly demeaning the office with his filthy mouth.
I realize I am pounding my head against a concrete block wall here. I realize that I will be dismissed or ignored, accused of "clutching my pearls" or being stuck in the past. (Keep in mind I am nearly 30 years younger than both President Clinton and President Trump.) But this does need to be said again: Language absolutely does matter. We should not toss aside dignity, professionalism, decorum and restraint just because we "know what time it is." Leaders have a responsibility to set a good example for the American people, and to project to the world - both allies and enemies - disciplined and sober leadership. When the President of these United States issues official communications containing the F word, that should be humiliating for the country, and for both parties. This, of course, is nothing in comparison to the President's demented personal cruelty against his enemies.
On policy, President Trump has pursued a number of good things: regulatory reform that lifts burdensome rules from American businesses, tax reform that allows people to keep more of what they earn, reversing some of the "transgender" madness, and implementing a foreign policy that has the primary goal of advancing American interests. President Trump's most important legacy will be appointing three Supreme Court justices that were part of the 5-3 majority that overturned the abominable Roe v. Wade decision. He would be seen as a much better President had he not broken his promise to be presidential.
Worse yet, a number of conservatives who used to be advocates of self-discipline and professionalism now openly mock concerns about "naughty words," simply because of tribal loyalty. They will have absolutely no credibility to criticize Gavin Newsom (who is playing a ridiculous troll character) or any other Democrat running for President in 2028 for their language. They will be correctly seen as hypocrites who care only about their tribe, not actual principles. Standards of decorum and professionalism will continue to decline. Only new voices (or old voices who have been consistent) will be able to start reversing this trend in 2029.