But for a pet project I also bought a cheap sub-80 euros clone off of alibaba (found the same on amazon.fr a few euros more expensive), and I have to say the quality of it was good enough for most usage I actually have, and it came with equipment to attach it, take it underwater, ... To the point I realized, if I had neither now for my need that cheap one with a good sd card would be enough.
There is obviously a place for GoPro as a brand but given how the bazillion smartphone camera optics produced every years helped improve the field immensely in price/quality, their attempt to capture the market while having decent margins was doomed. Most people will prefer "good enough, third of the price".
At least that's how I view it.