Professional caretakers milking benefits have a long history of lying about the severity of conditions to help people like this stay in the home and continue making a living off them.If you really think this woman is insane, no one is being served by keeping her there except whoever's pretending to take care of her.

I’m not sure if it’s a benefit or time wasted? 

My partner and I grew our portfolio to 5 properties within a few short years, but he never felt that the benefits of real estate investing outweighed the risks... despite the profits we made while downsizing. 

This is lot of work for lender without any commitment from borrower but it benefit borrower a lot  specially in this market when the investory is lwo.

What is your opinion on that and what lower amount of return do you think would be an acceptable amount as a tradeoff for this gained experience?

If I sell within the next 2.5 years I can avoid capital gains tax which in this case for me is a big chunk of change

If you rent and you are here 3 years before you PCS out you will drop $79k in rent, paying another Biggerpockets members mortgage :) What others failed to relay is the benefit of homeownership such as Mortgage Tax Deduction.Even if you don't turn it into a rental and end up selling when you PCS out you will save $$$.

You're also exempt from cap gains if you've lived there at least 2 out of the past 5 years.

How can I help him / how can wholesalers benefit probate attorneys?

It won't be a large return at first, but the knowledge gained may be worth it in the long run.