>>240626
You can practice getting stronger through various exercises in a gym. If a skill is do something well or perform a technique with perfection, how come moving your body through space regardless of blockage isn't a skill? Olympic lifters who practice the snatch aren't just good at the snatch, they're generally stronger through the practice of resistance training. A powerlifter who deadlifts but doesn't snatch isn't as skilled in a snatch, but they have the skill of general strength to lift up a barbell and bring it to their shoulders (given it's appropriate for their strength level.)
A black belt Judoka hammers away at Osoto Gari, a Strongman competitor lifts a 300 lb. stone. If you had them swap places for the movement, the two would be put under a stress they weren't yet prepared for in a specific aspect. However, they possess the skill of general strength to push through and accomplish the task (albeit not very efficiently). That's the ultimate difference, their is general physical preparation and specific physical preparation. Specific training is technique based, but will make you stronger in a general aspect. General training will make you stronger in a broader sense, but allow you to put more intent into specific techniques.
Strength, in either a specific or general sense, is a skill.