Since it's been brought up, I think we can indeed call Hinkley's living arrangements lavish. 2,400 square feet for an elderly couple is a bit ridiculous in a dense residential zone. That's a bit bigger than my house growing up for a family of four and we had plenty of space. Plus, let me ask you this, if Hinckley got hungry, do you think he got up and made himself a sandwich? I guarantee you that all his food was tunneled into him. Now, for a guy who could expense anything he wants, he wasn't out shopping every day. But as Hugh Nibley reminded us in Approaching Zion, Sam Walton (I think Sam was his example) drove an old pickup truck and had a closet full of suits he didn't wear (preferring jeans, I think the implication was). Nibley at that point cited Thurstein Veblen, noting that fast spending is just the foolish side of money, and that the real evil (in Nibley's opinion) was money as a status symbol. In fact, Nibley goes on to argue that someone who is rich but doesn't spend is what we call a miser. Ebenezer Scrooge, like Hinckley, lived in a nice place and had his needs taken care of. He had a comfortable life and all the prestige of money backing up his name which created a space wherein he, like Hinckley, lived out his life as a workaholic.
And note Scrooge's "praise for the Victorian era workhouses." (wiki) That's right, let the money flow to where in belongs, into the coffers, into the bank accounts the brethren control with absolute authority. Let the bishops slave in their workhouses, essentially handling two full time jobs with children and a wife who is discouraged from helping with finances (and put extra burdens on her if she does, since her husband has no time for the family). And if little Timmy needs an operation? Tithing comes first. The love of work is a common denominator of the brethren. How many brethren quotes (and mission talks from GA's) could we cite praising harsh work (AND harsh working conditions that make us humble!)?'
I'm not personally judging Hinckley here, but by the apologetic standards of beloved Hugh Nibley, I'd say Hinckley was a cheap old miser.