Chris Larsen is not the first person to donate to a political rival of the US's president-elect, so this is nothing, especially if he and Trump are not direct foes, I see no reason for vendetta. Also, the US is not a Banana republic, the president may decide on a thing and the court overturns it, he doesn't have absolute power. Lastly, the CBDC is being delayed not because it is centralised but the negative impact it may have on the US financial services. XRP is different.
Money talks. So if Mr. Larson is able to convince the incoming administration with his money, Ripple (the company) and XRP will be riding off into the sunset.
Let me start by saying the discussion wasn't about Chris Larsen giving Trump money but a vendetta by Trump for not supporting him by Chris Larsen donating to Harris's campaign instead. You can read it here:
https://bitcointalk.org/index.php?topic=5517566.msg64805120#msg64805120. There is no need for Trump to do that, not donating to your campaign doesn't make you enemies if they do not have personal issues.
I understand the President of the US doesn't have absolute power. But I remember Trump himself saying that he will be a "dictator on day one". With Republicans gaining control of both chambers of Congress (House + Senate) and the Supreme Court being dominated by conservatists, anything's possible.
I quite understand you and Trump should not preach that he will be a dictator with some people, he is actually a dictator, it's the rich US system and democracy that is holding him back. This is what will also prevail over him this time despite all his tyrannical attempts and many of his followers in Congress.