If the govt reduces taxes for people in low income range is that vote bank politics?
If government provides free education to the poor is that vote bank politics?
Both the above items are aimed at a certain segment.
If you think the answer to above questions is Yes, then in that case every body has vote bank politics, and discussing whether it’s vote bank politics is of little use (I am not even sure if it is a bad thing).
I think a better question to ask is whether it is good policy. I don’t see any argument indicating it is bad policy. Seems like it is helping a certain section of the society at little cost to the rest.