I believe I started the thread referred to in the OPs post, so here's my 10cents...

Personally I am happy to, and always will, abide by the rules of the cabin/status I fly. If the answer had come back yesterday that my infant daughter isn't allowed in the lounge (along with my wife) then so be it, we would have gone and got coffee somewhere else. When my Daughter turns two, and assuming we aren't in a premium cabin, then that is what we will do.

What I don't like is the assumption by some people that, as my daughter is under 30, she is going to disrupt everyone else's day. I intend to bring my daughter up in the same way I was brought up, with manners and a respect for other people's well being. Not everyone does this of course, but just because others don't, don't tar me with the same brush.