Weren't they talking about an upgrade 2024-2025 with new engines and other things.
I would expect they would want to fly it for tests for quite a period before putting it on an operational aircraft... look at how long it has taken to get AESA radars on aircraft... not that they are stupid, but that they are cautious and practical... where PESA has most of the advantages and rather less cost.
that are 1 meter or below in size to engage incoming air to air missiles because the tracking precision of using 100ghz will be high enough which is needed for a small diameter sized homing radar for a missile.
You don't need 100% precision, most Russian SAMs are able to shoot down missiles and bombs including missiles aimed with beam riding and also command guidance. Mainly because there is such a thing as laser proximity fuses.
Tank like APS i dont know. T-14 is like 26.5-40ghz. Missiles engaging an aircraft are faster and more manueverable.
Not usually much faster and generally not particularly manouverable... certainly not as manouverable as an aircraft...
The APS for the T-14 can stop APFSDS rounds which can be moving at rather higher speeds than any AAM.
Projectiles have a very short range, and dont have homing heads to follow incoming air to air missiles and they follow just one direction., so the area of destruction will be very close, but that wont be a problem depending if 100ghz is able to detect the incoming missile at a good enough range
Rather than trying to cover every potential angle with fixed munitions... like ARENA or DROZD, it makes more sense to carry a bundle of small light weight anti missile missiles like Morfei is supposed to be. A sort of modern R-60 except instead of a light self defence missile for heavier aircraft it would be a lightweight sprinter that can engage close targets including missiles and possibly large calibre rounds, but also aircraft and drones.
Morfei is supposed to be a lock on after launch missile with IIR guidance and a two way datalink with a full thrust vectoring rocket motor to be used in aircraft (ie inside weapon bays of stealthy aircraft... fighters and bombers, on standard aircraft like helicopters non stealthy fighters and bombers and also drones) in the Army on a separate ground based vehicle to replace the SA-13 together with Pine, and the Air Force on its own separate platform to compliment Pantsir with a fire and forget weapon and also as part of the S-350 launch system and could also be used on the S-400 for short range defence because removing one full sized S-400 missiles allows four S-350 9M96 missiles but four 9M100 Morfei missiles fits in each 9M96 tube so therefore for each 250km or 400km range S-400 missile you give up you should be able to carry a single layer of 16 Morfei missiles and because they are smaller than the smallest 9M96 missiles your could probably carry two layers for 32 missiles per S-400 missile you give up... which should afford excellent self defence capacity for the battery... and finally the Navy will be introducing the 9M100 Morfei as a CIWS missile that can be fitted to Redut tubes, though I would think being able to carry them in TOR tubes would also be beneficial on land and at sea...