There is but it is marginal in my experience. Most home networks have limited broadcast traffic, and its broadcast traffic by definition that has to be processed, if only to be inspected, by every host on the subnet such as the streamer. Of course lower down you have a fairly constant stream of ARP requests handled ny the Network interface card.. the traffic and load here is proportional to the number of hosts on your network. Again for home networks this is probably benign.
Now one area that would be more relevant here is if you were using large scale multicast for streaming media... such as video or audio... here things could start to matter. The multicast discovery load for UPnP is trivial and therefore the multicast address can be converted to a broadcast address by little cheap switches like consumer Netgears with no real impact.
However if multicast video is taking place, then managing the group of hosts for a particular multicast address becomes essential if not to load the hosts such as the streamer with irrelevant data. Here using switches that understand IGMP snooping would become key so the multicast group traffic can be correctly directed and doesn't bombard the poor streamer.
I guess most don't use multicast video (IPTV) at this time, or if they do their ISP router and its switchports handles the IGMP snooping.