I think trying to fit things into a dichotomy of puff/hit pieces is actually obscuring the truth here. Eric Berger is a space flight enthusiast and so he covered SpaceX positively when they were doing good work there, but now that Musk seems to be interested only in playing political games rather than running his companies, there isn’t much positive to report: it’s not a hit piece, just the truth many SpaceX fans didn’t want to hear. It’s not a left/right thing (do you know how Boeing’s CEO votes?) but rather Musk having fully embraced the post-modern world of right-wing politics where there’s no such thing as truth which contradicts what the party wants to be true.
Fundamentally, it's the "reality has a liberal bias" problem. Accurate reporting is interpreted as a political act because it disagrees with the "alternative facts" being presented by the right wing.