They could afford to be a little more high-handed.
Snow Ninja Village, on the other hand, couldn't.
To put it bluntly,
just in terms of the number of Ninja, Konoha alone had more than enough to match three Snow Ninja Villages. Naturally, when it came to organizing the allied forces this time, Naruto had to play things a little shrewdly. This also concerned their main plan for the future—to annex all the villages and unite the entire Shinobi World. Snow Ninja Village couldn't suffer too many losses in this campaign. They might not need those Ninja for the battles ahead, but they did need the vast numbers of ordinary Snow Ninja to maintain basic rule. Otherwise, even if Naruto, Sasuke, and Neji all reached Six Paths Level and could easily destroy a major village to secure victory in the war, they'd still need ordinary Ninja to govern. They couldn't expect Naruto, Sasuke, Neji, and the others to deal with every little problem, could they?
Naruto wanted to build a truly harmonious, peaceful world.
Otherwise, Uchiha Madara's—or Kaguya Otsutsuki's—way of ruling would be the most straightforward. There would be no conflict, and everyone would be forever lost in an eternal dream. It really would be "harmonious," "serene," and "peaceful."
But that kind of "false peace" wasn't what Naruto hoped for.
It was just another special way to destroy the world.
The ideal world Naruto himself wanted to pursue
required a great many people to help him—and they had to be loyal to him, people who truly stood on his side. That was the main reason Naruto had spent years doing everything he could to train the lower- and mid-ranking Snow Ninja and expand the ranks under his command as much as possible.
Those "assets" had all been built up by Naruto