I watched the two free episodes, and to be honest, I wasn't too blown away by the look. Of course, that's subjective and our opinions can differ. I also saw "Amateur" on Netflix (shot on F55), and I also thought the images were underwhelming. That said, I think it's a tricky conversation to try to attribute the look of a camera to a show, or the look of a show to a camera. It's even more tricky to judge the quality of a camera based on the look of a show...or vice versa.
While I disliked these two shows, I thought the show Vinyl looked really good and it was shot on F55. I also thought certain episodes of Marco Polo also looked quite good and it too was shot on F55.
I'd be hesitant to attribute the success or failure of a show's look to a camera, but instead, the professionals, workflow and budget.
Agree re: Marco Polo. The first few episodes didn't look very good, and later episodes looked much better. Also note they use different directors (and production teams?) through out that series. I watched Cobra Kai on a 4K monitor on a computer, and it looked very good compared to prior F55 content (again, agree not all shots looked great, but a lot more than normal for the F55). It's been known for some time the F55 can match the Alexa in a studio environment:
https://vimeo.com/96696423
The reason Alexa wins for most pro shoots is the ability to produce a great look in a wide variety of lighting conditions. Thus kudos to Sony for the F55 getting more and more shots looking good over time. The VENICE is looking to have parity for Alexa (it's a different look, and still looks great).