I think I remember that thread, but I'm not about to go searching since it's probably buried somewhere.
But no, you're not alone. Of all new songs written for the stage musical, that one is BY FAR my favorite. I've listened to that brilliant thing countless times and I still haven't gotten tired of it. Whenever someone sings it, no matter what the venue is (did I just make an unintended pun??) I always, just go ''awwwww yyessss' and melt and just...listen.
I'm certainly sorry to see that none of the stage musical's songs will be used, ESPECIALLY that one, but when I heard him say why, I can't help but agree somewhat. It's like how I wondered how One Day More in Les Mis would work on film since, like IICLH, it's SPECIFICALLY written to end act one (which for me wasn't wholly terrible how ODM was done), but if there's one thing Alan is a genius at other than his stupidly brilliant music, it's structure/where a song would fit, IF it fits...and in what medium (stage or screen) it would fit IN. He's not wholly incorrect in saying it wouldn't quite fit in the film medium, for reasons already mentioned, altogether I would have loved to see them at least try to make it work, since it is a much loved song. Maybe they did, I have no idea, but the way it the songs and music were talked about, it sounds like Alan always knew he wasn't going to do it.
Ah well, I'm just SSSSOOOOOOOOO looking forward to seeing this, it hurts.