Gimbaled thrust in 'rocket speak', is equivalent to vectored thrust in 'aviation speak'.
Many modern military aircraft use thrust vectoring in order to improve performance, particularly in tight turns, the F22 being an example.
The harrier and the F35 also use thrust vectoring to enable VTOL (vertical take off and landing) and/or STOL (short take off and landing) capabilities.
Of course not only jet aircraft use thrust vectoring, nor is thrust vectoring confined only to military applications.
The Boeing V22 Osprey uses thrust vectoring, while the XTI Aircraft Company are currently developing a ducted fan VTOL civilian aircraft.
Anybody with any aviation knowledge, be it in aerodynamics or that of piloting a craft, will know that failure is unlikely to result in an uncontrolled event of any kind.
Firstly, in forward flight wings will continue to generate significant amounts of lift. Aircraft do not require engines to remain in flight, only to maintain significant airspeeds of 500mph+. Think of multiple commercial airliners that have previously experienced complete engine failure, only to glide for many miles.
Secondly, for rotary wing VTOL aircraft, a failure in any stage of flight will likely result in autorotation just as for helicopters, allowing for a great deal of control. Assuming the craft also has surfaces providing lift, this acts to provide an additional benefit.
Lastly, the very first 'control surfaces' used by the Wright brothers were warping wings.
Current control surfaces (ailerons, flaps, and the like) were originally brought into play because of the inflexibility of aircraft wings used since the early 20th century. We have used the same control surfaces ever since, but they are incredibly aerodynamically inefficient, hence why NASA has been developing alternative flexi-wings (https://www.nasa.gov/press-release/nasa-successfully-tests-shape-changing-wing-for-next-generation-aviation).
Offering a different perspective by controlling direction via engine management as oppose to manipulating airflow may improve efficiency yet further.
Beware of placing too much faith in armchair 'experts' and naysayers of online forums. Usually they have very little real experience or knowledge, let alone any vision of the future.