I know people do successfully make these beers in 7-10 days. I also know many/most commercial breweries produce these beers in that range too. However, that said, almost every batch of NEIPA that I have ever been disappointed in was a batch i tried to push through in 7-10 days as opposed to 12-14. I have just always found the extra few days lets the beer clean up a bit and pushing it has always given me a bit "harsher" hop profile.... more grassy, more vegetal.
I don't doubt anyone else's ability in doing it..... I just know that with my system, and my process, I have always produced better beer with a few extra days on this style.