No you are definitely the one who needs to learn abot servers. They have tracking servers, aka what save your progress. But those don't make any difference in connections at all, if they were down or malfunctioning literally no one could even get on destiny. They don't have hosting servers, the thing your are complaining about.

Well. You may want to ask your friend again then. I'll chalk it up to you being probably under the age of 16. Here's an article from before the release of the game that explains how connections and the world of destiny work. http://www.gameinformer.com/b/features/archive/2013/12/06/the-matchmaking-technology-of-destiny.aspx