Surprisingly, ergonomically, escalators are actually quite tricky to navigate to humans.
Your own stairwell at home will have a steeper pitch to it, as a consequence of having to have a lower tread due to space constraints.
There has been a surprising amount of work on optimal staircase design, as it’s actually an accidental “hotspot” within the home.
To accomodate the higher levels which escalators tend to run, (the floor to height difference of a shopping centre is not the same as your home) and the mechanism that allows for an escalator to arrive with a flat footfall at bottom or top, the actual stair is very steep as it starts to rise or decend, may be almost double your home stair, with which you are practiced in rising without armfuls of shopping.
Indeed “memory” might make you more likely to lose your footing on a forward moving, rising, moving stairwell, with an unfamiliar rise and tread to what you are used to.
Ultimately, if you are so pushed for time you need to run up and down, then it’s at your risk, and you are endangering other passengers and being inconsiderate of them in a narrow moving space. There are still a surprising amount of accidents on escalators annually, leading to lost limbs and or breaking bone injury.
It’s NOT just because people are lazy, but that at a “shopping” centre” they might be expected to er, be carrying shopping, and so it’s a safety aid and one which allows those of frailty (ie old, young, disabled) to shop safely.
Just because the op is a ss 29’er riding, Audi driving, male white youthful fit IT technician (well, he must be, he’s on SWT for heavens sake) with all the adviantages that this gives him, it’s no reason to have a go at those that aren’t, or that don’t want to endanger themselves with loads. Using an escalator correctly isn’t laziness like eating chips 30 times a week, nor is the OP a hero for sprinting up or showing off by using stairs.