...up to two golf clubs, ski poles, as well as sporting sticks used for hockey, lacrosse...
Would those fit under your seat or in the overhead bins to qualify as a carry-on in the first place?
I think this change puts that decision in the hands of the airline. It seems to me that what security allows through its gates and what the airline allows for space reasons should be two, mutually exclusive things.
That said, some things like trekking poles & pool queues can often be broken down or otherwise collapsed which shouldn't be a space concern.
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Victory awaits him who has everything in order — luck, people call it. Defeat is certain for him who has neglected to take the necessary precautions in time; this is called bad luck. Roald Amundsen