I have owned several land cruisers and still have an FJ40 and an FZJ80...I have also owned the 100 and 200 series...
With this as a backdrop, my personal opinion is that the Land Cruiser started veering off of its original purpose with the 100 series...and was totally off the mark in the 200 series. Can't disagree with capability claims...but each of those were a big departure from the 40, 50's, 60 and 80 series...Utilitarian, rugged dependable vehicles...
The 200 series was/is a bloated overpowered and mussy driver...I had one for two years and traded it for a Porsche Cayenne...the Porsche has incredible road manners and could rival the off road capabilities of the LC.
With today's new 250...I think folks don't realize that it is Toyota's goal to get this series back to it roots...so all the bellyaching about creature comforts and driving abilities are somewhat misaligned with the vehicle. I would tell someone who is looking for a comfortable road machine to buy a Tahoe or Yukon... you want luxury ...buy a Range Rover, Porsche or Land Rover...and then tell me how happy they are after a trip to the dealer for repair or service.
The Land Cruisers, before the 100 series, were not designed for acceleration, cornering on twisty roads or even luxury purposes...yes, some had leather seating and air-conditioning...but most were purpose built for off-road or utility use...and then adapted to the American road taste.
I now own the 1958 series, having traded an FJ Cruiser for it. It's a spare ride for the family...as I still have the 1st gen Cayenne. I agree, this is not the fastest, most luxurious LC ...but even with it's controversial drive train, it checks all the boxes of the LC purpose. Drive it like it's intended and you wont be disappointed. If you try to drive it like a sports car, or even the Cayenne, you will be disappointed.
I too have questions about the longevity of this drive train...I don't think it will last as long a the straight sixes or the V8's...but time will tell here. For me, I hope I cal get at least ten years or 100K miles or more out of the 250...But understand Toyota is in business to sell automobiles ...and the average consumer today leases the vehicle for 3 to 5 years or if they own it trade it before there's 60K on the clock...that's the market.
I think the typical. old-line Land Cruiser owner is an outlier ... with aspirations to hold onto the vehicle for 15+ years...I am one of these guys. Fingers crossed this truck meets my expectations. Knowing how Toyota engineers and builds its vehicles I do have some confidence...otherwise I wouldn't have purchased the Land Cruiser 250.
So if you don't like the 250...go buy something else and stop your bellyaching...Doug!