Seems like the USAF absolutely wants to rush their NGAD into service ASAP... Not sure if that's a good thing or a bad thing for the NGAD.
Depends on how they do it. If they do multiple iterations like the F-15, that seems fine. if they do an F-22, probably not so much.
The rush is due to this forum's topic, I'm sure and the news of the manufacture rate of the J-20.