As I said, I don't see anyone here celebrating their own situation at the cost of others. And as we here are virtually all UK/US expats, or soon to be so (or once were), we're all in the same position. The USD strengthening is good for us all in one way and not so good in another. (In my case, good for the initial outlay of moving to the UK; bad for sending money back home once I get there.)
I think your suggestion that anyone's dancing on others' graves is a bit harsh. So if I had a great day, but you had a bad one, should I not be happy for myself?
Yesterday, I had a really sucky-woo day--scary and costly even--lots of others here had a fantastic day. I'm not put off by their joy at it, nor consider them inconsiderate for talking about it. Same principle, except the £ and the $ play off each other. But as we all have money and/or debts in at least two different currencies, it's all relative. Where was your angst for those of us holding dollar positions when the £ was running 2-1?