Critics were made by MoD, not from MVD or FSB, which use quite a number of domestic UAVs like from Zala, which also improve its UAVs through years.
This is quite true, but different UAV requirements are needed for different roles.
Most of the criticism from the MoD came from the Air Force that wanted long range and high altitude... which means of course a fairly large and expensive aircraft with powerful high quality cameras and powerful datalinks etc etc.
The previous FSB and MVD requirements have been short range close by observation around a patrol vehicle for instance.
Now they are likely looking at longer range longer endurance UAVs that are not operated by front line troops but communicate with front line troops and pass live data to those forces.
There are plenty of successful Russian UAVs in service with many organisations both government and private company used for checking pipelines or overhead wire networks for problems or damage... like fallen trees or leaking pipes or broken wires. Flying at medium to low altitudes will give a better view of the object of attention that has known coordinates.
For border protection however you will need to be silent because if the subject knows they are being watched they will take steps to remain hidden. To maximise coverage a high flight altitude will give good coverage, and for the purposes of search and rescue being able to deliver support or rescue equipment could be a plus.
I have read about a few Russian designs that have a built in glider component that can drop payloads of up to 25kgs of material with a glide capability... this would be very useful to supply troops behind enemy lines as it would be silent, and 25kgs of food and water and ammo would be useful, but in a survival situation if the UAV spots people on the ground in the middle of the desert or Siberia then dropping them food and water and a tent or cooking stove for hot food or just warmth could be very important. After dropping the rescue material with flares and tents or whatever the main UAV can circle the area till a ground team reaches the people or person in distress providing a communications relay source for ground searchers and directing them to the people needing rescue.