The IP adress leak is also very common in a lot of "flashy" opensource projects trying to "solve" communications. Because apparently everyone wants his computer to visit a url to parse some data, so that one can decide whether the link is safe to click or not... A private discourse forum (actually any forum software, sometimes spam bots post gifs for usercounting!) does this to great effect with media too - it just a…
In most cases "leaking your IP" isn't considered a problem. I leak my IP to hundreds of websites a day. Of course there are concerns, especially on mobile where you may be able to do some location tracking. Really the biggest place where IP leaking is a problem is gaming communities where people like to hammer IP addresses yo DoS people.
Also funny: if people bookmark your website in iOS safari and you don't have a favicon, safari will regularly visit your page :). Found out that my father had bookmarked my empty blog that way, because suddenly an IP from his workplace showed up in the log... Yes, in the face of the other abuse this is minor, but I think it illustrates the total disregard for privacy nicely.