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That's why you, as a dirty player, should think before giving advice to people ;)
The rule is stupid! I don't agree with it, so I'm writing my opinion. I've encountered similar situations several times. I was ready to replay without any problems, but the opponent insisted on dismissing the troops... Well, we dismissed the troops, arranged them as in the screenshot.... In the end, the opponent cast an extra Armageddon, even though he shouldn't have had enough mana! In short, I don't like this kind of shenanigans...
In general, I'm a supporter of agreeing with the opponent when an incident occurs!