Diplomatic and military strategies, by definition, are not decided through public debates. So the jingoism around Indus treaty with Pakistan seems more like an attempt at sending threatening signals. But it will have multiple serious ramifications in any case, so it is worth deliberating about.
The 1960 Indus treaty has allocated rights of development on three eastern tributaries (Sutlej, Beas & Ravi) to India, and we have exhausted that entitlement almost fully. Attempts to use the occasional remaining flow will mean a huge impact in Indian Punjab, which is unlikely to resonate well with the people of Punjab. The treaty gave Pakistan dominant right of development of the three western tributaries (Chenab, Jhelum and Indus), India has limitations about water use (both in terms of quantity and manner of use) in case of the western rivers. India has not yet exhausted the entitlement in this case.