Things you actually NEED to do a track day. All that other stuff is just nice to have. You can bum rides, borrow stands, etc.
IF you go through a set of tires a weekend then you must be going at a hell of a clip. Like top 10 expert racer clip.
For most people, especially those just starting, my above list is all you need. People get overwhelmed and misguided when they see these ultra long lists. You can definitely spend a ton of money getting into track days, or you can do it on a budget. Just depends on what you want to do with the track days.
Sure it's nice to have a dedicated bike, toy hauler, warmers, new slicks every day, but you don't NEED those to get out there and learn.
Bottom line: JUST DO IT!