I agree - we've been to weddings where the culture is to pin money to the bride and groom whilst they are dancing. This is a lovely thing to do - they haven't asked for it with a crappy poem, all they have asked for is for your presence on their special day. Anything else is not expected by them, but happily received. If we know that couple are planning a trip somewhere, we've gone to the Bureau de Change to obtain the appropriate currency for their destination.
I think the difference is, the cultural norms, and the newer, 21st Century Expectations and Demands. More or less, 'You can't come to our wedding unless ..... you wear what I tell you, you give us what we want." This, I find disappointing.
DP and I have been together for 30 yrs, we may get married one day. If we do, we will just love all our friends and family to come along, we will not ask for anything, but if they really want to give, then we will simply nominate a couple of charities. We have a home, all our pots and pans (and a toaster) 
I don't think anyone is saying that there is anything wrong with giving the happy couple what they want, but it's the way they go about it. Does all seem rather grabby and demanding. That's not what the celebration is all about, surely?