That would be a nice perk… but I wouldn’t count on it being official.
Emirates doesn’t advertise “blocked middle seat” or guaranteed empty neighbor for Gold. What probably happened is a mix of light loads and smart seat assignment. Airlines do sometimes spread elites out when they can, especially if the flight isn’t full.
It can look like a pattern when it happens a few times in a row, but it’s usually inventory management, not a hidden benefit.
If the flight fills up, that empty seat will disappear fast, even for Gold.
Still, four for four is a pretty good run. I wouldn’t question it too hard 😅