There was a US lawsuit against them for their linear compressors: https://www.nbcwashington.com/news/consumer/fridge-failures-...
Out of all the fridges that LG sold, what percentage had issues? LG sells a lot of units, so even small percentages may end up with 'critical mass' of problems that gains wider awareness.
An article from an appliance retailer that has their own in-house service department, and so has statistics on repair rates of the various OEMs that they sell:
* https://blog.yaleappliance.com/lg-compressor-class-action-la...
Looking at service rates in total (for all issues), LG has the lowest number out of all the manufacturers they sell/service:
* https://blog.yaleappliance.com/the-best-counter-depth-refrig...
* https://blog.yaleappliance.com/most-reliable-counter-depth-f...