And that’s relevant how?

I don’t buy unknown Chinese brands for stuff like that. And that’s getting harder. But that’s a separate issue.

"Stuff like that" being what, anything mains-powered, anything with a lithium-ion battery, anything that touches your skin, anything that might get very hot as part of its operation, anything whose continued functionality manages the safe temperature or pressure of anything else, anything that connects to the Internet, anything that stores data, anything that touches food, anything you might ingest or inhale, anything load-bearing, anything that is costly or difficult to remove once installed, any components that fail in a way that damage other components in the same device, anything whose failure would block an ongoing project, anything that seals containers or conduits for liquids or gases, et cetera, et cetera? It turns out that the category of products who can fail in a way that wouldn't be covered by a full refund is actually "most products".