Its under "advanced" tab in BIOS. How many people accidentally stumble there? And how many of those people will have problems with it? And of the tiny number of

Its under "advanced" tab in BIOS. How many people accidentally stumble there? And how many of those people will have problems with it? And of the tiny number of people who end up enabling it and have problems, how many will then complain to Lenovo? That seems like really marginal case! Especially when it needs also things to happen from OS side too, so just flipping the flag in BIOS in itself shouldn't do much. How much trouble would it have been to add warning "this is not supported, use at own risk"?