That argument could hold true for any bike part though. From what I've read over the year the best brakes by their operation are Dura Ace yet EE, THM, Ciamillo etc. all make lighter brakes that
possibly don't operate as well.
Despite my obvious bias here, being a chainring manufacturer (amongst other things) I'm not quite sure why Praxis rings have become so huge either. I don't have any objection to them, but they're certainly not the first chainring I think of when building a light weight bike. Even if we didn't exist I'd still be looking at other lighter options. If I was considering a race bike that wasn't all about the weight, then it may well be a different story.
Tune carbon rings....?
As for the whole bike here, I think it's rather nice. the chainrings look out of place imo, but other than that, it looks great. the only thing I have a bit of an issue with is an 'off the shelf' bike at 13000 Euros. It's only a few years ago when 13000 Euros was a full custom show bike, I guess that there's more wealthy people out there than I thought!!
