The previous comment is very likely talking about RFK Jr. Trump promised him "a major health role" in his administration, and Kennedy already announced on Twitter that he plans to push Trump to make aggressive changes. Based on his views, it's not difficult to predict what they might mean for vaccines.

And then the Democrats did take the vaccines. And then the Republicans made it their whole identity to not take the vaccine. in no small part because Trump mocked anyone who did take the vaccines, dismissed the severity and scale of the pandemic as "Democratic lies" and "fake news" (because he wanted to run on the economy) and refused to do so himself, lest the press see him as "weak." And now Trump, being Trump and going whichever way the wind blows, fully embraces anti-vaccine ideology by endorsing RFK - a well known antivaxxer and conspiracy theorist - and promising to give him "carte blanche" control over numerous health agencies and health policy in general.

Do you recollect?

It is a mistake to imbue the Trump regime with an underlying system of rules and reason. Everything Trump does is a personal transaction. RFK Jr. is loyal and brought some critical support to Trump, so Trump is going to let him do whatever he wants. Trump doesn't care about the outcomes.