"were an Alcubierre-driven ship to decelerate from superluminal speed, the particles that its bubble had gathered in transit would be released in energetic outbursts akin to the infinitely-blueshifted radiation hypothesized to occur at the inner event horizon of a Kerr black hole; forward-facing particles would thereby be energetic enough to destroy anything at the destination directly in front of the ship"
Though it mainly applied to matter caught in the 'field/bubble' during acceleration. In those fictional universes they got around this by designating entry- and exit-zones in the star systems, coordinated by automated buoys stationed there, to circumvent communication delays. If you didn't have the right 'passport'... err codes to authenticate, you'd fly blind, and possibly be hunted by the space traffic police for grave violation of all sorts of traffic rules.
If you were military, you shat on it, and even used it as a weapon.
Decelerating at sub-light speeds will also require massive high energy exhaust plumes if we’re using any traditional drives for that, which if a ‘warp’ drive is possible, we’d likely still need.
So death from both ends, basically.
Probably best to wait for us to land to say hi, or nuke us from far enough away the mess doesn’t get in their hair.
"were an Alcubierre-driven ship to decelerate from superluminal speed, the particles that its bubble had gathered in transit would be released in energetic outbursts akin to the infinitely-blueshifted radiation hypothesized to occur at the inner event horizon of a Kerr black hole; forward-facing particles would thereby be energetic enough to destroy anything at the destination directly in front of the ship"
https://en.wikipedia.org/wiki/Alcubierre_drive#Damaging_effe...