For telephotos, overall the combined F and Z options win hands down against any other brand for reach, Tele-zooms, Affordability (especially buying Used) and not least ergonomics. Overall, the new Z telephotos have broken new ground in combination of weight, quality and haptics (balance,internal TC's etc). The pair of Z Teleconverters are also superior optics compared to F mount equivalents.
With the exception of the 500 PF and 300 PF, these new Zed telephotos are the optics of choice for today's lightest 'Commando Kit ' : combining unbeatable image quality and top end AF with the Z9.
For shorter focal lengths. Zooms win without exception for the Z mount over the F mount options: optical quality, filter systems, and also weigh less.
Here again the Z system supports a more compact travel kit primes and/or zooms, and contingent on pairing with a lighter Z camera in place of a respective DSLR of comparable specifications. The fast Z primes may be heavier but balance out, and unmatchable quality extends to the 'slower' (and lightweight) f1.8 primes and even cheaper Muffin primes.
Thom Hogan's summary and reviews refer:
https://www.zsystemuser.com/z-mount-lenses/nikkor-lenses/categorizing-the-z-nikkors.html
So does PL's:
https://photographylife.com/nikon-z-series
https://photographylife.com/one-year-with-nikon-z#where-does-the-z-system-stand
As the many choices confirm, reported here, weight is only one variable. There are others, notably image quality at different lens speeds. Yet another can be choosing the Z-Teleconverters, with much improved image quality particularly with the Z Zoom-Telephotos.
Quibbles aside, within a mere 4 years the Z System has expanded the choices in optics of the highest quality, and also weight, and of course prices when we include the Used options. Yet another pragmatic reason to carry on regardless of purists with a mixed DSLR/MILC system :-D
Silent Shutters is the other incomparable advantage of the Z cameras, of course, for wildlife but also many events
Good poins yes.
To me by far the most significant advantage of the Z mount over F mount, and over any other DSLR or mirrorless mounts, is the ability to adapt any lens (except Canon RF but they are of limited appeal anyways) with excellent AF performance.
This is of tremendous value.