My understanding is that by switching to the relays suggested in this note, you’d be improving the efficiency of how your client communicates with the most used relays, and therefore improving performance. In the case of connecting to wine relay you are essentially connecting to many others for reading and writing, by just connecting to one. In doing so, you are decreasing the number of individual relay connection requests your client is making. Thereby improving (decreasing) consumption of data and battery resources. Although there seems to be a centralization factor to consider as well. Maybe we don’t want to have many accounts connecting to a handful of relays that proxy the most popular relays in the network. Even if doing so improves resource consumption
Not really sure if it is an improvement in your case since you are connected to a few, but for those who are individually connecting to many of the relays wine is, like I was, then possibly it is. Curious myself to hear the OPs thoughts on your question.