Sam Presti was the only GM to vote against the flattening of the draft lottery odds back in 2017. The draft lottery reform passed with a 28-1-1 vote, with Dallas abstaining.
The NBA needed a three-fourths majority to pass draft lottery reform, and 28 teams voted in favor to do so. Important to keep in mind going forward as well, Adam Silver cannot pass any draft lottery reform without a minimum of 23 teams approving.
Looking back, was that the right decision from teams? It seems the draft lottery has only gotten more controversial since then, with more teams actually incentivized to tank in hopes of either landing a top-4 pick, or keeping their protected pick.
Sources:
https://www.youtube.com/clip/Ugkxqj9BVl0yR7CyVXl-3yhgYq3AiQQ2PXkR