It's not an accident. Extreme wet-bulb temperatures on the Indian subcontinent have long been atop everybody's list of the most probable large-scale climate disasters that could happen in the coming decades. KSR just fictionalized the research.
I came here to make exactly this comment. Just how long do we expect India and Pakistan to endure these temps before attempting a geoengineering solution? Before you say 'the world would not allow that' I remind you these two countries have both nuclear weapons and the means to deliver them.
The two countries waste much of their resources patrolling their mutual border. If they reunite instead, they could at least focus on ensuring enough solar energy to run ACs for everyone. Additional solar energy can even be used to capture carbon.
For a country like India or Pakistan, it'd have to be pretty affordable. I hear stratospheric sulfide injection meets that criteria but has it's own issues.