I used to work at Best Buy in the Video department. We got all new products shipped in just for Black Friday. One year we got these $40 VCRs (I realize I’m dating myself here) that we must have sold a billion of. Within the week, we had so many returns that we didn’t have any place to put them.
Similarly Best Buy’s brand, Insignia, is a mix mashed TV full of components from other TV brands (unless that has changed in the last 4 years). They’re usually the ones to go on deep discount but, due to the nature of the internals not being from one company, they’re nearly impossible to repair.
So, although your Insignia may last a year and a half or two, the Sharp panel may fail, the Phillips backlight could fail, or the PCB from Samsung could fail, adding to more e-waste.