It may be true to an extent. I'm not sure what significance that fact would have.
You'll never hear of a champion bike rider called "Minnesota Fats", so I think it's reasonable to say that bike riding requires more fitness than pool and some other activities.
In any race-type activity, if you could only go 5% faster than anyone else out there without wrecking, it wouldn't take much skill otherwise. But since that is seldom the case at a high level, presumably skill enters more and more into it.
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"be careful this rando stuff is addictive and dan's the 'pusher'."