Tanks and APCs are here to stay for the subcontinent battlefield primarily because the key “deciding battles” will be focused on open plains or relatively open environments where mechanized forced shine. By the time it looks like India has captured a critical city or urban area it will likely be TNW lines crossed anyway.
The exception being the less friendly terrain moving across the LoC and further north.
For India the terrain towards Aksai Chin - Ladakh area is plateau(ed) enough to where light armor and fast mechanized units could make a big impact regardless of UCAVs and other assets at play as severe weather could be used as cover for such offensives.
India Achilles heel is its (recent)historical poor integration, onboarding and execution with new systems along with fairly misplaced and mismanaged priorities in public-private sector defense projects. As an e.g. it was a priority to have HCL install a fairly expensive telepresence system at major IAFS but not focus on the secure comm network between them.
The same can be expected for all projects including the now finally operational Milan systems and the eventual Naga and other systems.
Any induction of the Armata isn’t seeing operational deployment (flying 4 Apaches or Chinooks at the LAC unarmed or with just RPs isn’t operational) for at another 5 years and another 10 to really have a doctrine built around them.