There are a lot of things different in the "real" world and the "software" world.
Nobody would accept underwear with a build in camera, gps tracker and a microphone wo give the data to x companys. But with a cellphone (almost) everybody is ok. Also if something goes wrong with software, it's the customers problem. The customer accepted the contract with no rights for him (software AS IS, no warranty), nobody would accept a such contract in the "real" world.
Specifically, it's only the case for unsupported project bits that the user doesn't pay for. Commercial FOSS products have the same sort of warranty and support as any other software product.
There are some cases of of selling products without much in the way of guarantees. Something you buy on eBay AS IS is pretty much only warrantied to be as described.
Nobody would accept underwear with a build in camera, gps tracker and a microphone wo give the data to x companys. But with a cellphone (almost) everybody is ok. Also if something goes wrong with software, it's the customers problem. The customer accepted the contract with no rights for him (software AS IS, no warranty), nobody would accept a such contract in the "real" world.