Which is why I'm left wondering, why is it that "Silicon Valley Is So Nervous About H-1B Reform". Unless the headline is simply clickbait, I don't think the question was answered...
What the article was moving towards - but never actually said - is that there is a fear that reform will "throw the baby out with the bathwater". For example rather than fixing the rules so that spots go to the right people, changes may just reduce the overall number of visas.
Given the approach to the new administration, seems like the generic solution will be to just reduce the number of visas (ahem after revoking 100,000 of them).