Product reviews were never the right place to look, because they don't get published after 10 years of use. But unlike in the 1970s, 1980s, or 1990s, you are one search away from appliance repairman forums that lay it bare.
I confess to not having done this when I first bought my LG appliances, but that's on me. And then when they broke and I called a number of SF Bay Area appliance repair shops and they all said "we don't touch LG", I had an epiphany.