Most apps integrate with reminders in some way, but only import from there. I am also looking for a long time now. The only app that comes to mind is Obsidian with the „Remotely Save“ sync plugin. I use it for notes but you can use obsidian for todo lists.

True to a degree but you can do similar things with thinkpads and keep them longer. The company can always extend lifetime by enabling repairability and upgradeability. But this goes against their profit since they then can’t sell a new product every two years. The consumer shouldn’t have to find ways around planned obsolescence and feel superior if they manage to solve this puzzle.