It is quite one thing for a community like ours which holds multiple cards and do online transactions and mostly stay in metros and tier 1 cities to talk about this not affecting us. We know what is the penetration of credit cards in our country and how many people actually use internet and mobile banking. While it is true that the use of UPI and wallets have increased manifold in the last few years and it has penetrated deep inside the country even in remote areas, it still does not have universal usage and many people, especially the elderly, are not able to use it. Also, with the use of UPI and wallets, frauds have also increased a lot and it has mostly been targeted at people who are most economically vulnerable.
I am not saying for once that because of the above, such measures should not be taken. Unless hard decisions are taken, we will never progress and move forward and there will never be a perfect time to take such decisions as there will always be some people who will be adversely affected. Such decisions must be taken, but we must be aware that there are people, apart from just hoarders of black money, who will be adversely impacted, who are genuine, hard working people and who do not deserve hardships, but are facing it as a price for the nation to move forward. While taking these decisions, it is the responsibility of people like us, who are even the slight bit more aware, more knowledgeable and more privileged, to help and support the others who do not have such privilege and create a conducive atmosphere for such decisions to succeed and include everyone in that success. It is easy and simplistic to just say that it is a good move and will impact only black money hoarders is like taking the easy way out.
Sorry for the longish message and if it felt preachy, but just wanted to share my heartfelt thoughts.