It could be relevant, if the user has wallet recovery details on his laptop that shouldn't be there, like mnemonic recovery words saved digitally in a text or Word/Excel file or worse, screenshots. Things, experienced users won't do, but ... inexperienced users are a totally different subject.
Good point, I didn't think of that level of carelessness. But I'd expect a thief to steal everything, and even if he didn't to avoid attention, he'll still have the seed phrase and can take the rest at any moment.
You don't know what valuable data could be leaked to dishonest technicians.
For this reason, I just take the loss when a disk dies and never claim warranty. Better safe than sorry. Laptops are trickier, they probably won't allow you to take out the disk to claim warranty.