These things will only buy time but eventually the tank or the AFV will be swarmed and defeated by drones. It only becomes a matter of few more drones to do it.
However ... However it is exactly time what you are buying for. More drones and attention is paid on the tank, attention is diverted elsewhere from the APCs and IFVs that are dropping infantry somewhere. The Russians may have already calculated and factored the loss of a few AFVs in exchange for capturing every settlement. If no AFV are lost, or damaged AFVs are recovered and repaired, it's a bonus. A bigger bonus if they were able to recover damaged and repairable AFU vehicles.
The Russians does appear to have converted vehicles with machine guns, Zu-23-2, even quad AK setups, with thermal night vision and algorithm assisted motion tracking to aid in drone shotdowns. There's also said to be a project to give BMPs and BTRs with tracking that can be used to shoot down drones with their 30mm. The turrets in these vehicles are already capable of 60 to 80 degrees elevation so they can already potentially shoot down helicopters. What they need is some night vision and software motion or predictive tracking. But we have to wait and see if they will reach the field if ever. Budgets are tight and it seems the Russians will only eventually accept the most cost effective optimal solution. Right now these involve snipers, which proved to be very effective against Baba Yagas --- sniper rifle deliveries have surged by a few factors Verba MANPADS, and interceptor drones.
The Verbas are either man held, used on a new variant of the Typhoon-K vehicle, or used to equip Strela-10M. Speaking of which...
There was a report not too long ago a Ukrainian Lt. Col whose helicopter was shot down during a drone raid. It's not clear if it was due to one of the missile equipped Gerans.
Expensive SAMs would only exhaust themselves financially against UAV swarms so I would think the most economical way to take down UAV swarms would be from helicopters using machine guns, auto cannons, interceptor drones and MANPADS. The losses of drones from helicopters would have been serious enough for the Russians to arm drones. The Ukrainians use Mi-8s and Mi-24 Hinds for such purpose, would have made more sense if they requested AH-1 Cobras or Apaches for such rather than F-16s. Conversely, Russians use Ka-52s and Mi-28MNs for UAV interceptor duties, sometimes using the 2A72 30mm cannon, sometimes using the Verba MANPADS. In parallel, Russians were using helos to take out Magura sea drones, and it was serious enough that the Ukrainians were arming the drones with R-60s, taking out a Mi-8 and even possibly an Su-30, and this probably gave the Russians inspiration to put R-60s on their Gerans. Nowadays instead, Maguras are taken out by Lancets.
