It's interesting to juxtapose Bill Gates' report with the much more detailed and first-hand one linked here.

Without having more certainty than is warranted, it seems plausible that Bill Gates took Prime Minister Modi's word at face value, even though it was apparently all political bluster, and he should not have.

Now, if it were contaminated water in mandir's offering to the devotees, the same party would be falling over themselves to proclaim it is pristine and then hound the health officials no end, branding them as unpatriotic,closet Pakistani etc etc. So it goes.