Well personally I think they should have waited another month at least. The first few BIOS updates drastically helped performance.
I mean just look at the scathing Gamer Nexus launch day review. "i7 in productivity, and an i5 for gaming", with Ryzen at 2133Mhz RAM matching Ivy-Bridge in their games suite.
While a month later BitWit tested 1700 @ 4Ghz vs 7700K @ 5Ghz, and found an overall 7% difference in their games suite.
That month difference was rather drastic for performance. Deadlines are deadlines though; and I remember reading rumors that motherboard makers didn't expect Ryzen to be as good as it was, and so didn't prioritize motherboard BIOS, and features either until the very last engineering samples appeared.