This right here can be applied to buying Redcat. They don't manufacture anything on their own, it's all outsourced from other manufacturers. Reviews for the cars are not accurate as the "fans" are generally very inexperienced in the hobby and they often times aren't entirely honest with how good/bad they actually are. You HAVE to do your research and find out who the OEM actually is, in order to get an accurate representation of how durable it actually is. You can't trust the quality of their products with their brand name alone like you can with Associated, Traxxas, Arrma, Losi, etc because the models are coming from 10+ different OEM's with different levels of QC, mold quality and plastic compounds.
I'm using Redcat as an example as OP mentioned them in the opening post of this thread. But, this can be applied to other low end brands like Maverik, ZD racing and FTX for example as they operate under the same kind of business model. Many budget options on Aliexpress are just the same 10 cars recycled under 100 different name brands as well. Especially the mini's which are almost always some repackaged WLToys, Hosim, HBX, MJX, etc. I'll use Import Genius sometimes to find out exactly who OEM's are for a lot of companies. Half the time, I can already judge how good a "new" release will be just by simply finding the OEM. I can usually find the exact same car that's been out under a different name for almost a decade or I can just look at the track record of other cars released from that same factory.