Originally posted by MMVIII i don't know about Fuji.
Roger Cicala disassembled a 10.000$ Fuji GFX100. I am stunned at the amount of plastic that is used on this MF camera. Still worse,
quoting from his lensrentals blog:
The K3 III is in a completely different class constructionwise; so is the K1 or 645Z...
Correct, and yet it took a Roger Cicala teardown to discover that and clear up the facts. The fact of the market is that weather sealing is a little bit like insurance - few people ever truly put it to the test.
You could look at Fujifilm's lens line-up and take away the message that they have a lot of weather-sealed lenses, and you can grab one of their weather-sealed bodies and come away thinking you are well-prepared.
If we look at their weather-sealed range, we could easily get the impression that they're taking aim at Pentax particularly, with many of their more compact primes being weather-sealed:
16mm f/2.8 (and f/1.4)
23mm f/2
35mm f/2
50mm f/2 (and f/1.0)
80mm f/2.8 (macro)
90mm f/2
200mm f/2 (not compact at all, just for completeness)
And, since you mention G mount,
all of their G mount lenses are designated as weather-sealed.
Now, if you think about this more deeply, why would you take a prime lens on an interchangeable lens camera into inclement weather? You won't be able to change lenses in good conscience without drying off your camera quite carefully first, which may not be easily possible if you have no shelter nearby. So weather-sealed zooms make a lot more sense unless you're a die-hard prime shooter that only ever uses one focal length per trip, or takes several bodies for flexibility.
But, as one famous book title said, "Don't make me think". Fujifilm offers the opportunity to buy all-WR lenses and have all your bases covered. About half their primes aren't weather-sealed, but you could avoid those and still have one for every major focal length (the exception being the widest lens at 14mm being unsealed, but the 16mm WR gets you fairly close). You can put yourself in a situation where you can grab any lens from your shelf, run out the door and not think twice about weather-sealing, because they would all have it.
This sort of thing can make an impression on a customer, even if the geeks may think the weather-sealing isn't as good as some other brand. A lot of camera buyers still don't frequent forums much before purchasing, and Fujifilm definitely caters to that market.