I have never had and AT last more than 175K and I really do meticulous maintenance.
The AT on my current Ford Crown Vic went out at 38,000 miles. I had it rebuilt and it has given no more trouble. It now has over 150,000 miles on it.
My 65 Olds Delta 88 came with a 425, positraction and a Hydromatic. It was my Father’s car then my older Brothers, then finally mine.
I sold it at just over 250,000 miles and the AT never gave any problem at all. I remember it had the water pump replaced and the AC compressor had a new seal installed, maybe a couple of other minor things but nothing major was ever replaced or repaired on it. I do remember the positraction always made a noise but never tore up.
Before that I had a 61 Olds with a 392 Rocket V8. It ran forever too. I sold it after it was about worn out but like the 65, nothing major ever went out and the AT never gave any problems. I can’t remember the miles but it had a lot.
I’ve never had one(built 1990s or later) NOT last 175k and I never do maintenance on them. These are full sized 2wd 3/4 ton trucks though. They might be better than most.