It isn't an either or option. You can use attack helicopters, ground support aircraft and drones.
The point i am making is that drones have played very minor role in strike configuration. see this strike drone. It need long and well built runway. most probably several hundreds kms away from battlefield. several people are dealing flight preparation. this is just one drone that can barely takes 2 to 4 weopons.
Compared to the number of personnel required to maintain helicopters or aircraft sorties?
They do carry less ordinance, but you can mitigate that by increasing the number of drones you deploy. You can also have those drones split up and covering a larger area, something you can't do with a single plane.
Orion is better but still all slow turbo prop drones with limited ability per sortie with no self protection suit and predictable flight profile. Stealth drone with internal bays and high subsonic speed is another matter.
Self protection from what? Ukraine's defences have already been largely suppressed. Even if one is shot down, it's better that missile hit a drone than a su-25.
If there are Chinese drone and drone crash in Ukraine for what ever reason. there will be backlash against chinese and drone reliability will be questioned.
If you bought them before the war started you would have been fine. Now it will be a political issue.
it is high tempo operation. thats why so many cruise/ ballistic/Tornado G missiles are launched as speed, punch and surprise is top priority. attack choppers practically flying from mud fields and they are carrying non-symmetrical payloads. attack choppers have radar. that currently no drone with enough power can provide and i doubt drone can provide simultaneous standoff engagement. attack choppers still have guns/rockets to finish off splattering of initial target at close range. the level of armour protection and EW suite provide that opportunity.
Also there is no-drone that can replace Tu-214R and if That thing is flying around so it means fighter jets already in the air for target of opportunity that can guide much faster missiles.
It's much more expensive to use large ballistic & cruise missiles than PGB.
Again, drones aren't the solution to all problems. But you are refusing to acknowledge the unique advantages drones have.
To me it seems Russia isn't able to deploy enough Orions for it to make a difference so they're not bothering. Or they're just stubborn and refuse to integrate a new platform.