Mainly because they were expecting it to be a 100-parter that would take over the entire series.
Once they realized that the show wasn't going to be a convoluted mess like that, they stopped liking "Scorpion" and used it as the starting point of the Borg's fall. Because it showed that it was possible for a Borg ship to take damage that wasn't a plot contrivance.
Hyperbolic enough for you? Every time you talk about the audience which was critical of Star Trek: Voyager
, you seem to be inventing their response out of thin air. It's not conducive to any kind of thoughtful discussion.