From a mindset perspective probably very much so. From an available-warm-bodies perspective perhaps not so much. In 2021 the population was around 140 million, with the large majority outside military age.
Now China or India...they have the masses of young men to expend. All those young Chinese men with no hope for a family of their own...gotta do something.
My belief is that the mindset is the really important part.
Look at the US — we have 350 million people. That’s a lot. By the numbers, we could play the Meat Grinder game for quite a while. But you know we really can’t. When we get into a war and lose 3000 people our politicians start to panic.
Russia has the mindset. They beat the Mongols. They beat Napoleon. They beat Hitler. They may not have a huge number of people, but they believe sacrifice is how you win.
China and India definitely have the numbers. And they may also have the mindset. But I don’t remember a lot of examples of 10 million of them dying on the battlefield. They may not really be into that. And by the way, I believe the “young men with no hope for a family” are mostly in their 40s now. Younger generations are more or less 50/50 male and female.