> It's one of those devices that just quietly do their job forever.
Except for the battery, which isn’t that easy to replace on an iPad. And apps relying on anything online (including browsers) stop functioning at some point, because you can’t replace the OS or install arbitrary apps.
Is it significantly worse than an iPhone? I've opened up iPhones 4, 5s, 7, 8, and 13 to do home battery swaps, and none were particularly horrid, especially if you'd not passionate about trying to restore the factory water-seal adhesive on newer models.
An iPhone 13 is also a shitload of glue around the screen, though pulling apart an iPad sized device using suction cups does sound especially hair-raising.
I mean, you can take your iPad back to Apple and have them replace the battery, you know. For my current one (a "4th generation" Air) that'd be $120, which is not cheap, but it's cheaper than replacing it for $700 and a lot less stressful than trying to replace the battery myself.
(Having said that, I'm not ruling out replacing it, but I don't think I'll be inclined to do that until they stop updating its version of iPadOS.)