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And that is exactly the reason why strike zone systems have been necessitated.

Bad umpires can’t be fired due to the Umpires union, so their relevance has to be taken away.

I strongly believe that this situation wouldn’t be required if fans were shown that bad umpires wouldn’t be tolerated.

Agreed.

It seems to me, without knowing anything about their union, that it would be in their best interest to let umps to get fired for performance reasons, as opposed to getting replaced by robo umps.

Maybe this is a bargaining chip ploy by MLB? Personally, I'd be kind of sad for umps to get replaced, although I see the argument for it.

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