Hard to say honestly,
Of course, it looks pretty. But he got out of the chocks without bringing up an engine page, running any of the BITs, aligning anything, etc.
So, the systems could be anything from highly accurate to not accurate at all.
I'm very happy to see that he fixed the nose (or the NAVFLIR, which seemed to be a little far forward previously).
The only other two things I noticed:
The sound. Harriers have that High Bypass Turbofan whine. Much like an A-10, the sound is somewhere between a test signal and a coffee grinder as I think someone mentioned above. You really need that sound to feel at home in the Harrier.
Can't be sure, but the flaps don't quite look correct. The VSTOL mode is selected according to the message line, which should set a minimum of 25 degrees. Those look a little less than 25.
Of course, I'm away from home and watching on an iPad, so I'm not getting the best view.
It does look like it's coming along though. If RAZBAM is dedicated to getting it right, they are certainly off to a good start.