...were crap at software even before they pretended to be able to create "smart" TVs. My dumb Philips TV has a separate menu for the digital TV bit and the rest of the system, the former supports OTA updates but I think they no longer send them out over the DVB-T broadcast mux and as my TV wasn't plugged into an aerial when they were doing so I have a buggy software version installed.
The best thing they could have done was leave the software to third parties like Google, Apple and Roku and stuck to making good hardware. Although Google might not have been a great choice (Android TV - is that supported now? Nope). Unfortunately they thought they could make money selling apps to their customers as well as tellies.
The annoying thing is they never seem to learn. Each manufacturer at the very least should have had one smart TV platform for all their TVs, which gets updated for all their TVs. But the fragmentation even within manufacturers' models is ridiculous. Who would possibly want to develop anything for that? No wonder API changes mean broken apps.