I don't know enough about Robert F. Kennedy's background in general, but I'm getting a vibe that this isn't a wise choice.
He's what mainstream scientists and even the rest of the Kennedy clan would consider a crank -- especially with respect to vaccines, HIV/AIDS denialism, etc. Once a representative for the contrarian and conspiracy mindset on the left-populist side of the fence, and really still is.
His alliance with Trump doesn't change that, since they converge in the general populist and independent voter medium. Going back over four decades, Trump has historically and opportunistically flirted with and courted everybody -- he's not a real conservative (as exemplified by his overhaul of the GOP and his own drawing power to attract a wider spectrum of antielitist tastes, disaffected minorities, and political extremes).
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