Slam click...You must be tired
There is no conflict between posts...you hit it on the head. You don't have to spend a ton of money buying top equipment to enjoy this hobby, or to get photos posted on Anet. I would suggesst that you ask yourself why you want to get into aviation photography. If you want to enjoy yourself by watching airplanes and challange yourself by trying to take the best photos possible for your own enjoyment, your will probably have a great hobby. But we have seen many people come through here who think it is really cool to take airplane photos, invest in some equipment and think they will have stuff displayed on Anet. When they find it is not that easy they get frustrated and stomp off in anger.
Remember that it is a HOBBY. You can throw as much or as little money into it as you want. There are photographers here who use 20+ year old 35mm cameras and reasonably priced scanners to get their photos on. Others use semi pro to pro equipment and wind up with the same result.
Learn photography (both the technical side and the aesthtic side...at least a passing familiarity with the tech side...) and ENJOY. There are few things like catching that "just right" photo to make your day. View Large View Medium
Photo © Tony Zeljeznjak