I'm not so sure about that. The current administration can be kind of unpredictable (to understate it a little...), and this seems like exactly the combination of fuck-the-elitists and Trumpian populism that could work. Silicon Valley, culturally speaking, fits pretty clearly into the subculture that Trump set himself up in opposition to, in a way that even finance doesn't (given that the current govt is an uneasy alliance between business conservatives and right wing populism, as mediated by Trump's personal whims).

I think it’s more that “fuck the elitists” is a tune that can be morphed into from nearly any other tune.

But how would it get through Congress? Trump is essentially incapable of pushing legislation that Congress doesn't already support...

Because Obama or Hillary would surely do it. Come on man...

Trump is championing himself for deregulation, and fair trade. GDPR is additional regulation, and can be viewed as a protectionist move from EU side. I can't really think of a real reason why Trump would like it.