To the carriers a phone interview will be all about them. Though it will help to protect the agent too.
For Annuities, the phone interview would not really be for the same reasons as LTCI.
LTCI they are worried about a potentially lengthy & expensive claim due to dementia.
For the FA it would be about cognitive ability to enter into a binding legal contract and understand that contract.
A person with dementia or impaired mental status can be approved for an annuity with no problem. They just need a spouse, family member, or POA involved in the sale.
So if the person did not pass the phone interview it would not be a decline. They would most likely require you to go to a doctor and have them perform a more thorough examination. If the doc clears them great. If not, then the carrier would probably require a POA involved in the sale at that point.
I think this would be great for the industry and will be necessary in the future due to our litigious society.
The carriers will do it to protect themselves, but it will protect us agents too.
I think you will run into trouble with anti-senior discrimination laws. You can't discriminate because of someone's age. Making a senior jump through all those hoops for a financial transaction won't fly.