this is always in a bubble and no bank "officially" allowed or provide reward points for cc bill payments. as long as it works you need to take advantage but as said bubble can burst anytime and prepare for alternative.
Do not recommend to open "salary account" just to get reward points for "cc bill payments". Moreover, its cumulatively 0.93% that means need to spend 1L every month to get that rate. If you spend only 50k as bill payments you might get only 0.5% and also with Indus we never know when the points credited.
So, 0.5% reward rate not worth the hassle to open "salary account", IMO. Open account only if you like that product or branch people otherwise even credit cards in Indus not much value and doesn't required salary account to use them.