Interesting they chose a picture of a floor shift automatic for the article.
Need a third foot to do that (or a hand brake) with a manual.
Edit: Hill lock definitely sounds nice. Didn't exist when I was young, poor, and had crappy old American made manual shift cars...
Of course some nitwit pulled up right behind me as I was trying to pull out into the road. I tried easing up on the foot brake and allowing the clutch to grab some as a quick test but the car still started to creep back. I said screwed it and yanked the parking brake as hard as I could while getting off the foot brake and meshing the gas while at the same time letting up on the clutch and undoing the parking brake. Not the hardest thing, but mainly made an issue by modern drivers getting right on your bumper...
Pretty common on late 60's, 70's, and some 80's cars.
You just didn't go old and crappy enough. Studebaker had "Hill Holder" back in the 1930s: https://en.wikipedia.org/wiki/Hill-holder
Performing a hill start correctly is often part of driving tests in the UK.