From what I know, the machine owner can set the strength of the claw - including so weak that it can't hunt anything.
My husband says, the most important thing is to find out if a particular machine is on settings that make it usable or on settings that just swallow money.
Maybe in your childhood, you encountered machines on more user-friendly settings than the ones you encoutered now.
My husband did win some plushies relatively recently but he says, not every machine is winnable at all.
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Let's not confuse being normal with being mentally healthy.
<not moderating PPR stuff concerning East Europe>