It's probably a coordinated strategy. Cheung also said it.
https://en.wikipedia.org/wiki/Steven_Cheung
Cheung served as the White House assistant communications director and later the director of strategic response in Trump's first presidency.
In November 2024, Trump named Cheung as his White House communications director.
Cheung employs a combative style mirroring Donald Trump's own approach to the media.[24][25] The Atlantic described Cheung as having "relentless aggression" that "helps quench the base's thirst for owning the libs."[25] Stephanie Grisham, who worked with Cheung in the White House, told NOTUS that he excelled at "pithy statements that can offend people quickly, which is exactly what Trumpworld likes."[26] In contrast to his predecessors, Cheung's social media posts are often profanity-laden and attack Trump's adversaries.[25] Cheung has referred to various political adversaries and reporters through terms such as "cuck," "dumbass," "dick," and "fucking stupid." He described James Comey, the former director of the Federal Bureau of Investigation, as "one of the dumbest motherfuckers in human history,"[24] Florida governor Ron DeSantis as a "desperate eunuch",[27] and California governor Gavin Newsom as "a mongoloid who barely registers half a brain cell."[28] According to The New Yorker's Clare Malone, Cheung's abrasive tone is not present in his direct and private communications with reporters.[29]
The last sentence there demonstrating that it's a character he plays for the public.
EDIT: If that sounds strange, I remember an interview some years back with an EU senior translator where the question came up of why Brussels didn't codify an "EU English". His answer was that that was a very intentional decision, to avoid having language that diverged from what was in general use, so as not to come off as being decoupled from the public, some sort of disconnected elite.
Now imagine that you're doing that and cranking it up to 11 to try to demonstrate that you're like someone that you want voting for you. A lot of politics is just saying things that people agree with and acting like them to convince them that you're aligned with them. Trump's political goal is to get and keep white blue-collar voters voting Republican, not Democratic.
https://ca.news.yahoo.com/wtf-donald-trump-politics-f-151806801.html
Donald Trump drops the F-bomb: Is the presidential profanity really that shocking?
Plus, swearing is normalised for what is referred to as “blue collar” work sectors – a key demographic when it comes to votes. So, dropping a few f-shaped transgressives into speeches could be considered as judicious.
https://www.theguardian.com/us-news/2025/sep/27/democrats-anger-swearing
Democrats race to embrace swearing and angry comebacks – but will it work?
Democrats’ wider embrace of swearing, trolling and scorched-earth comebacks is part of a broader mission to sound more like “normal people” and less like a party of poll-tested talking points and white papers. From campaign rallies to TikTok vent seshes, the characteristically buttoned-up Democrats are taking more risks – and punching back harder at Trump and his administration.
The bigger challenge, Shenker-Osorio notes, is that Democrats aren’t just competing for eyeballs with Republicans — they’re up against an algorithm that prizes outrage and emotion, whether it’s Maga memes or Taylor and Travis engagement headlines.