I see the Op's point somewhat.
Zen 2 doesnt look like the absolute game changer that some rumours made it out to be. I think we were all quietly hoping the top end $499 part was going to be a 5ghz 16 core chip (come on, you know you were keeping fingers crossed for that ).
Unfortunately AMD have taken things a bit more conservatively and have no doubt "sandbagged" things a bit. I cant see any reason why they couldn't have made the 16 core chip an opening release at the top price point, other than the fact that it would have taken them too far ahead of Intel in price per core/performance.
The 3000 series undoubtedly looks good and the 3900x especially looks like a better buy than anything Intel have at around that price range.
You cant help but think about what could have been though . A ~£500 16 core/32 thread on release would have been quite something. We would then have been talking about 12 core 3700's and 8 core 3500's. That would have really walloped Intel and made anything they have on sale defunct.
Well no... it wouldn't, because the same argument comes around that it's all about SCP and the fact that it's level with Intel more-or-less is irrelevant to them, which to be fair is entirely fine, but if you want extra cores without selling a liver for a 9980 or whatever it's called, then suddenly AMD is massively ahead.
Regardless no amount of discussion will push me back to intel, unless the chips literally exploded anthrax or something.