Well, thankfully an uninflated raft will have a rather low surface area, meaning you can drop it with reasonable accuracy even in strong winds. I'd also hope the teams deploying these rafts are practicing in real conditions, and have backup teams on ski-dos ready to roll.
I guess software could be written to calculate the best spot to drop the raft, but still the winds are fickle.
If the raft wasn’t dropped precisely it might be pointless as most people in a panic would struggle to get to it.