Ah - a mere youngster - I've been riding for 40 years
As to the worst advice ever -

The original question was raised by a guy 6ft+, looking for a big load carrying bike that would be comfy for his wife as pillion. He specifically mentioned an older Goldwing, Pan, etc. I was merely commenting from personal experince about living with similar bikes. If he'd have asked about a dirt-bike, or sportsbike, I'd have commented on those, but he didn't! Similarly, an MZ - a personal favourite of mine by the way and I still have a couple in various stages of disrepair - didn't fit the criteria.... As to "test-riding the hell out of as many bikes as you can" - erm - good way to become an accident statistic!
Physically, there's no reason why he shouldn't be able to handle a Goldwing, or Pan, or K1100LT, particularly if he takes time to get used to the beastie - which doesn't include riding the hell out of it

So what therefore is the point on starting with a smaller bike that doesn't meet his needs?
Final point - whilst acknowledging that you found the Goldwing uncomfortable, you are in a huge minority (actually the only one I have ever heard criticising the comfort of a Goldwing)! As far as the others are concerned, the BMW K1100Lt was a favourite ride - and frequent winner - of the US Ironbutt rallies (1000 miles in 24 hours).