In my opinion it is not sensationalistic to write something to the effect of: "It's working as intended. Everything is OK. Nothing to see here. Don't worry, everything's going to be fine." That is the opposite of sensationalism.
That is not what was said, but an extrapolation of what was said i.e. your opinion of what was said. Not saying it is an incorrect opinion, just that it is an opinion.
Had that been what was actually said, then I would agree, there was nothing sensationalistic about it.
The excessive use of superlatives, in that article, had me giggling a minute or two as those were the writers overstated opinions.
One could purge the sensationalistic verbage and be left with a decent article which would read much more objectively. Of course, that is also my opinion.