What you have to show us is that you don't also believe in conspiracy theories. It's irrelevant whether others also believe in conspiracy theories. It just means that the conspiracy theory is more popular, that's it. Doesn't make it any less a conspiracy theory.
It all depends on how you decide what is a 'conspiracy theory' and what isn't. Because, frankly speaking, there is no way we can establish the veracity of anything that happens anywhere in the world, unless it is on the same street as where we live/work.
So, we rely on the media. Various media houses have varying degrees of reputation. In India, the Hindu, Indian Express, etc. have a reputation of being unbiased and coming up with well-researched articles. While Aaj Tak and India TV do not have the same reputation.
Now, when media houses with worldwide reputation from a multitude of countries come up with a story, they are generally believed. They have a reputation of doing their research and homework thoroughly well.
You might argue that some sections of 'reliable media' are biased against Pakistan, but then, the only effect of that would be a hostile tone in the reporting, they never twist facts or give an intentionally wrong impression.
So, when I see all these media houses of repute saying basically the same thing, I tend to believe it. On the other hand, not believing it and justifying it is a conspiracy theory!