If diversity were in fact strength, Yugoslavia would have been a world superpower.
The left understands this, they don’t want diversity of opinion in their own camp and they certainly don’t want a certain pale demographic to be fairly represented, but they’re happy to foist diversity of all stripes on their enemies.
They preach tolerance, just as they practice intolerance.
They preach universal love, just as they practice hate.
They preach freedom, just as they practice oppression.
The Left wouldn’t consider Yugoslavia diverse, except for the Moslem enclaves.