I have used my table saw to joint stuff for gluing, but the jointer buries it.
You have to be very careful in order to make a nice edge on a table saw, and there are a lot of ways to mess up. When I use the jointer, it takes about one minute from the time I wheel it out to the time I wheel it back in place. It's just about foolproof, and it's a pleasure to use. No snipe. No noise. Very little mess. Very hard to make a bad cut. You can set it to take off a microscopic layer of wood without throwing dust everywhere the way a table saw would.
I learned various ways to joint on the table saw. Clamps, boards, sleds...you name it. I avoid that stuff whenever possible. By the time I find the gadgets and get it set up, I could have done it four times on the jointer, with zero risk of destroying the work.
Bonus: no tearout.
Cry "Havoc," and let slip the dogs of bench.
I was socially distant before it was cool.
A little authority corrupts a lot.