Obryn
Hero
Or it's a lot of judicious use of a halfling's strength which they've (athletically) trained at, for precise and focused use of their 'raw physical force' while living in a big peoples' world.This is what strength represents in 5e.
"Strength measures bodily power, athletic training, and the extent to which you can exert raw physical force.
A Strength check can model any attempt to lift, push, pull, or break something, to force your body through a space, or to otherwise apply brute force to a situation. The Athletics skill reflects aptitude in certain kinds of Strength checks.
The DM might also call for a Strength check when you try to accomplish tasks like the following:
• Force open a stuck, locked, or barred door
• Break free of bonds
• Push through a tunnel that is too small
• Hang on to a wagon while being dragged behind it
• Tip over a statue
• Keep a boulder from rolling"
That's a hell of a lot of brute force involved with strength. You can of course ignore that and play your game differently, but we're discussing the rules and fluff here, not your personal game.
I already covered how climbing, swimming, and even jumping are no big deal - all of which are covered under strength. And for the rest, really, I can imagine all of those with the proper training in a world where there are also dragons. And we've already established that the actual rules of the game support halflings doing them just fine, so ... all of those would be fine in my personal game or anyone else's who didn't make a contrary houserule, no?
