I purchased a 1500w true sine wave inverter and rigged the necessary cables (with a 200A breaker and cut off switch) for my Leaf (has 40kw battery) for home power outages. Not nearly as handy as having it all built in, especially for camping etc. But it works. Tested just today and it powered my refrigerator and modem/router and a few lights for about 8 hours on 10% of my Leaf battery.
Agree that this should be a built in feature for ALL full electric vehicles. Stupid to have a 40-80kw battery pack and not be able to get power out in an emergency. And for a PHEV that might see camping etc, ought to be an add on that does not require XSE with PP.
I think I read somewhere that for 2023, this feature may be separated from the PP and XSE. Might be wrong.....