The Soyuz launch abort system is actually quite robust probably the best launch abort system that has been implemented for manned flight so far with the Orion and Crew Dragon only marginally improving on it and even that is still not clear given those haven’t been flown yet alone actually used in practice yet.
There's eight for redundancy, it's a fault-tolerant system.
Also, the engines are designed for use in space during a normal mission and to be recovered. So in that configuration the crew would still need to be located close to a hydrazine thruster as a part of a normal flight.
Smaller Dracos are used for in-orbit maneuvering. SuperDracos are now solely for launch abort. They could conceivably be used for an orbital maneuver requiring more delta-v than the fine-tuning the Dracos do, but at this point the only likely destination for Dragon is the ISS.