...me being the one to own the iPhotography thread, ofc I think you can take great photos without a great camera. XD
While I'd love to have a DSLR I think I can do just as well in most cases with an iPhone. While it doesn't have the greatest megapixels ever, I think the quality of the photos is just as great if not better than an actual camera which cost idk $400, or whatever I brought it for. Of course it wasn't a DSLR, but still.
Honestly it just depends on skill/knowledge as people have said. I take better photos now than I did like a few years back on that camera in particular I mentioned, and I've seen people have good-ish cameras but take terrible photos. It just takes time/experience.