They said that Yak-38 was used in STVOL mode and made a good perfomance. Other point is, that in Afghanistan runways with a few km length were seldom, so that Yak-38 was more effective, because other aircraft flew longer distance from ordinary air bases. Fuel was lower, but it didn't matter because the Yak-38 was near the frontline. So most time Yak-38 had a bigger fuel reserve, when returning as other aircraft.
The problems with airstrip were real, but it was a experiment first time they used a VTOL/STOVL aircraft in a conflict of a landlocked country. So they have now the know how, maybe they have some sufficient funds...and let's see what happens
What "LOL"? Are not you able to argue a point of view on a serious mood and attitude?
STOL seemed some funny features in the 60's and early 70's, when fastjets were designed with 0,5:1 T/W ratio.
Have a look at Su-17, extensively employed in Afghanistan.
With those aircrafts, 2000+ meters runaway was a necessity foreseen already in the drawing boards.
Today, any Mig-29 or Su-27 require and handful of hundred meters to take off, and with combat loads exceeding those actually viable for Yak-141, let alone Yak-38.
The test pilot in the video testimonies that by himself: he judged satisfactory the Yak-38 test because in Afghanistan when operating short take offs it could bring around 2 tons combat payload.
Now load a Mig-29 or a Su-27 with 2 tons only of ordnance, and check their take offs performances, you'll discover they need more or less the same runaway length required by the glorified Yak-141.