Point 1: What is the good of euphemisms? They enable us to express something without resorting to offensive words (whatever the offense may be). That's better for the ears and hearts of the listeners, certainly. But does it do anything for the speakers? If I say "darn" instead of "damn," what do I gain? Is the attitude of my heart any better for it? I think that's a good question to ponder.
Point 2: As I've said many times, of presidents from both parties: our chief executive deserves respectful treatment by virtue of the office he holds—not to mention as a human being. Chanting "F--- Joe Biden" like a football cheer is puerile at best. Moreover, it's probably worse than useless, venting people's frustrations without driving them to work toward changing the policies they hate. If I were President Biden, I would hear those chants and think, "As long as they're shouting and not actively working for my opponents, I'm okay with that."
That said, I have to admit that I find the whole "Let's Go, Brandon!" story hilarious. And maybe even a little useful.
Good humor can be an effective antidote to hate, and it's hard to say, "Let's Go, Brandon!" without smiling.