Perhaps. However, if Ledo is correct and Hideauze attack as soon as too much noise from electronics and possibly other machines is produced, then it's certainly not humanity's fault. But if Hideauze only attack after they have been attacked first or their territory clearly invaded, then it's certainly humanity's fault. It does seem like they are attracted by electricity and other signs of civilization, at the very least. Obviously humans in space can't live without all that, so it might be a situation of no avoidance - assuming Hideauze actually do go after humans in space (and not only retaliate after humans attacked first). But then again, if the war has been going on for centuries, Hideauze might have evolved/adapted to it, becoming hostile even if they originally weren't. Just like Ledo's people are so through and through militaristic.
Quite interesting development nevertheless. Ledo actually got a chance to show his true nature. I wonder if he really thinks he can make a difference all alone and without any of the bigger, external weapons, especially with Chamber's internal weapons useless undersea. It would seem like wisdom to only scout around, trying to contact his people, rather than irritate the Hideauze colonies without any real means to win bigger battles.