I've just watched it for the first time in a number of years (having a rewatch of the TNG movies - GF has never seen them) and boy has the film dated
, still really enjoy it in almost a quaint fashion - the same way I look at TOS which was a surprise, it actually looks like an older film than Generations which I wasn't expecting, the sets on the Enterprise E look positively ugly
compared to the D, which is a shame. It's still one of the better Trek films, but I no longer regard it the step up from the previous movie that it was heralded at the time, just different.
With regards to the question - I think it's been answered correctly in the thread already - they've had 8 years to prepare for the Borg and have developed weapons to try and deal with the threat.