It is practical. When mobile wallets was taking off a lot of people starting pitching "blockchain technogloy" in fintech and said decentralization needs to be the foundation for everything. The whole process largely become about technogical philosophical discussion about decentralization, p2p, intermediate crypto transactions, stablecoins etc. A lot of consulting firms made a shit ton of money while at the end of the government agencies and banks was scratching their head trying to find out how they "invested" millions without an iota of progress in terms of product development. The conclusion largely was fintech innovation should not be led with governments.
If you look at very large scale IT infrastructure engineering, a lot of times those technologies are developed and sold to governments by US or west EU government controled or influenced companies that does impose to some degree to the sovereignty aspect of a government.
So, with decentralization discussion most government lost a ton of money to consultants. They could wait for to buy off the shelf software that comes control risk. Or they could accept the risk and limitations and build a software that works now.
I think india made the right choice to build a system on framework that is proven and predicatable.