Resist the Accelerating Expansion of the Universe?

An Advanced Civilization Could Resist the Accelerating Expansion of the Universe And Earth-bound astronomers should be able to tell if someone is out there doing it
AKA giant fleets of Dyson sphere space ships powered by suns.

:eye-poppi Wow, this one has all my BS detectors ringing at full alert. Did Massachusetts just legalize Marijuana? Or mushrooms? Or am I wrong? My astrophysics is just not strong enough to vet this, but I don't want to make the mistake of argumentum ad incredulum.

So are there any good physicists left on the board who can help vet this for me?:D