Again even within their "safe" core territories we don't see an organized ongoing program of mass coerced conversion. So the point is - they weren't trying to totally Islamicize India and whether you believe that's because they didn't care to or they were afraid to due to political calculation doesn't really make a difference.
Remember, most Indians who converted did so due to the influence of wandering Sufi mystics who were regarded with suspicion by the court-aligned clerics.
Remember, most Indians who converted did so due to the influence of wandering Sufi mystics who were regarded with suspicion by the court-aligned clerics.