I'm reading this thread and there are a few things that come to mind.
My sense is that SpaceX's goals with Starship are significantly more ambitious than what is being tried with New Glenn. I don't mean to underplay the difficulty of what Blue is facing with New Glenn, but if we take that "rapid reusability" goal seriously the problem set seems significantly larger and not so "been there, done that". This makes the development programs much more difficult to compare.... certainly on the surface of the public optics at the very least.
While it's one thing to talk about rockets, it's another altogether to look and the engineering and practices going into the manufacture process of those rockets. I'm not an engineer, but I do work in manufacturing and, at least looking from the outside, SpaceX seems to be dedicating some significant amount of effort into building a scalable manufacturing process. Many other efforts have always appeared to be more about "bespoke" production even if the designs of each unit produced are constant. I could be wrong and maybe it's just SpaceX is a lot more transparent (willingly or otherwise)... but looking in from the outside, they seem to be developing a very mass-production oriented rocket factory.
And if New Glenn is just finalizing things and Starship is just vaporware... well New Glenn still has to land a couple more boosters and re-fly one (or two?) to catch up to those vaporware numbers. :-) Sure, New Glenn has now flown a paying customer... but I think we'll see Starlink launches on Starship pretty soon... well before it gets to "final validation".