If you read the opinion, that's not really what the case hinged on. It didn't really show that.
The major question was whether to consider race at all in districting. The state said they had to be race-neutral, and the Court said no, race had to be considered.
It didn't take new technologies to figure out that they could create a second majority black district. In fact, the state points out that the technological solutions to districting all generated the opposite, so long as the process was race-neutral.
Really the question here was whether to or not to gerrymander based on race. Tech didn't really change that legal question.