Makes me really sad looking through those. From what little has been released in the press by his family it sounds that he was Really suffer with dementia. I understand he battled with depression etc, and that does increase the risk of developing that awful illness that robs you of who you are, among other things he was suffering with this,
Lewy body dementia
Dementia with Lewy bodies (DLB) is a type of dementia that gradually worsens over time.[1][2] Additional symptoms may include fluctuations in alertness, seeing things that other people do not, slowness of movement, trouble walking, and rigidity.[1] Excessive movement during sleep and mood changes such as depression are also common. (From Wiki )
It’s tragic but if I’m honest having seen this illness ( albeit a different type) I’m not sure that I’d make a different decision in his position, all the beautiful bikes in the world won’t help you when you start to forget everything you are,