Patti is an American citizen and she, like any other entertainer, can speak her mind as she pleases. Doing so doesn't make her childish or ridiculous.
And as a side note, Trump's proposed budget wanted to gut the NEA, which I'm sure has made some of Patti's work possible- I imagine that's true for most actors in the theatre. He wants to threaten her livelihood, so why shouldn't she speak out? Good for her.
I am a firm believer in serendipity- all the random pieces coming together in one wonderful moment, when suddenly you see what their purpose was all along.