I think a more charitable reading is that OS upgrades left their devices barely usable to the point of having to be replaced. I'm not a big Apple person so don't have personal experience but have heard similar stories from multiple other people, that OS upgrades wrecked the old devices they were still using.

Two iPads, an iPod Touch and an iPhone of mine have been made unusable by OS updates. If Apple had made the cutoff just one OS version sooner, then they would still feel snappy to use. They’re not actually bricked, but completely unusable and essentially e-waste.