Islam spread both ways - through the use of sword and through peaceful means. In India Islam marched in with armies but advanced through the womb - often Turkic sultans and Mughal kings in India had Hindu wives. Their kids prefered to stay in Islam instead. They did not feel that their mothers were wronged against. Dhimmi status was offered to those who did not wish to convert. Some converted, the rest had their heads rolled. War happens for all kinds of reason. What is wrong when the reason is showing the path to Allah?
War happened during prophets time out of sheer compulsion, but heads never rolled, other than in battlefield. The pious had the light, had the lifestyle that made the message clear.
And to your point, specific point the Mughals and the Rajputs, Making a martyr out of Queen that contemporary writers said converted to Islam? The mughals and the turks did not reach the southern part of india nor the eastern part of india. These two regions contribute for close to 40% of Muslim population in India and they are distinctively different from the the Hanafi school of thought. For a moment remove the country barrier, Islam is Global, so the muslim communities in Bangladesh, Myanmar, Indonesia, Malaysia , Srilanka thats the direction and region you also need to look into to get real insights.
unbiased analysis requires one to be really humble and accept facts as facts... Read history in an unbiased manner...
Ever given a thought how jainism spread? ever given a thought how Buddhism spread? Ah lets come to a recent history point of sub-continent, Ever given a thought how monoethiestic Veerashaivism quickly spread and then stagnated? Or how Monoetheistic Sikhism quickly spread amidst the Muslim Major Punjab belt? And reason, that I will leave it to you with a hope that good side in you sincerel seeks the truth... the light...
Its not clear what ratio of population was muslim by the time the Mughals arrived.
And why ignore conveniently about the population ratio of muslims in 10 century, 15 century and beginning of 20 century? We donot have numbers ... soo fabricate the way one wants to see it?? ha!
The future generation will point that out, we will be blamed, just like the early European chroniclers are now accused....