Good luck spreading your overlords when he has map control with phoenix and void rays, oh wait. You lose to gate pressure if you go mutas, you don't know what you're talking about. The problem is the Protoss can go Stargate or 6 gate which makes the zerg play a guessing game unless they can manage to get an overlord inside. They didn't get outplayed, they got cheesed. This is like 2 Barracks pressure all over again, sure you can defend it but it's stupid strong and totally forces a Zerg to be entirely reactionary and stagnates gameplay. Force field on the ramp is a checkmate that the Protoss can play without having to put himself at risk at any point. If he sees you saw the Prism he just unloads somewhere else or pulls back, or blocks the other side of your ramp after he's forced your army out of position, lol.
This isn't something that spreading overlords or going mutas fixes, it's a much deeper problem than that and will require changes which just became even worse thanks to the Warp Prism becoming much stronger.
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