i have not seen this doctrine around at all in the last ~60 days
why is basically nobody using it? did the partisan rework really kill it
I think it has more to do with better options being available. For me, the two strongest abilities are radio intercept and mark target. For Radio Intercept, there are other commanders that all seem to be better top to bottom. Advance warfare gives you T3485 along with PPSH and loiter, infantry repair is ok but your army is mostly cons anyways so it has use. Armored Assault gets you T3485/IS2/Repairs/Loiter which is all useful but lategame focused while NKVD gets you AT Overwatch/Commissar/Scorched Earth. In 1v1, NKVD is quite powerful as the commissar synergizes well with T1 start and AT overwatch is godly.
Looking at Mark Target, the other two commanders that get it have Guards which synergize well along with a tank upgrade. Guard Motor top to bottom is better in everyway while Mechanized Support can be difficult to counter in team games.
Looking at the rest of the commander, the abilities seem to be lacking. Partisans feel like slightly better cons to start but quickly fall off as their VET is fairly bad. IF you want an infiltration squad, Airborne Guards are in two significantly better commanders. Airborne get PPSH for free while also having 6th man/significantly better VET and only have to wait one more command point. SPY Network is nice but got nerfed to only help the USER not the team so anything with some type of recon is better for the team in team games. Finally, Anti-Tank Gun ambush is extremely meh for a command point in such a weak commander. Maybe if it had been swapped out for Tank-Hunter Ambush it could have lead some strong synergy with the other abilities.