It's a racket where manufactures are creating a throw away vehicle with planned obsolescence. Hell you cannot even easily check the fluid level THERE IS NO DIPSTICK anymore.
What they want is for you to buy the vehicle with no recommend service on the trans for 100K. They design the trans to last 100K on the factory fluid. After 100K it is a crap shoot. You may get 50K more or maybe not. It is BS if you ask me.
In many areas of the country, the car will rust long before you get to 175k miles. The car/truck market is not composed only of people who want to buy a car and keep it for 20 years until it falls apart. That’s a small segment of the market.
Car manufacturers sell what people want to buy. For most, the benefits of an auto transmission far outweigh considerations of what the transmission will do after 175k miles.
Many manufacturers have put dipsticks back in or have installed electronic level sensors. They have also changed the fluid intervals back to either 30-60K or when a fluid life system determines it needs to be changed.
I have seen many modern automatics in fleet and private service go way more than 250K.