Apart from the list of items being somewhat generic and IP address just being unobtainable as someone else pointed out, it’s just saying that they get data about users by means of the normal functioning of federation. It’s ok in the same way as the server that originally hosts this community we are posting to (lemmy.ml) necessarily getting user data from our “home” servers we are posting from (feddit.de, sopuli.xyz), is ok. This is how we want it to work.