more about strela-10 from Wikipedia:
“Each 9M37 missile is 2.2 m (7.2 ft) long, weighs 40 kg (88 pounds) and carries a 3.5 kg (7-15 pound) warhead. The maximum speed of the missile is near Mach 2, engagement range is from 500...800 to 5000 m (0.3–3 miles) and engagement altitude is between 10 and 3500 m (33-11,500 ft). (The ranges define the zone of target intercept, minimum and maximum launch distances are longer for approaching and shorter for receding targets, depending on the target’s speed, altitude and flight direction.)”
sounds to me like the A10 and AH64 were the intended targets of this system.
Probably, along with the Apache and some of the older attack aircraft. Without going back and looking, my guess would be that the -10 evolved from older systems that had to be able to target the various Wild Weasel aircraft, and some of those were real fast-movers.
Ok, I went and looked anyway, and I was sort of right. The -10 doesn’t really have a predecessor, but the -10 is also old enough that it was contemporary with the old F-111B and F4 WildWeasel aircraft, which would have been harder to hit than the slower A-10.