I mean, this kinda only applies to devices that need the highest energy density.
For situations where space isn't much of an issue, it can make more sense to use other forms of batteries that are cheaper per MWh. I agree Li-ion won't be replaced in phones etc. but for some applications that are stationary, it can make commercial sense to use something else.
While they definitely have many products in the cheap junk category, but I think they have pretty good hardware in the mid-upper range.
Software is the real junk in Samsung products; their high-end TVs would be great if it wasn't for the crappy software and updates.