I think you're missing part of it - cars get junked when the cost to repair approaches the entry cost to a new(er) car. If you're having the work done, Land Rovers are pretty expensive to maintain. My LR4 with 115k miles has a blue book value under $10k and a $5k trade-in value. It doesn't take many $1.5k repair jobs to make you doubt your decision to keep. To me it's not so much could the vehicle go to 200k, but do people bother taking them there, and a lot of that comes down to maintenance. The list has no Lexus vehicles, does that mean they don't go 200k? Obviously, when buying an older vehicle with lots of miles, you want to be diligent in your evaluation or you stand to lose your 'investment'.
This.
If you look at used listings, almost every 100-series Land Cruiser you see has well over 200k miles. The ones that don't are currently listed in the high $teens.
Even the ones with 250k miles are listed over $10k.
But there was a time in or around 2017-18 where you could buy one for around $4k, and I venture to guess a lot of people who were paying $4k for a Land Cruiser were balking at the cost of a lot of things that need to be done to keep even a Toyota on the road.