Zoning is not busted at all... Some characters are really good at it but so what? I am actually glad zoning is a good and viable playstyle this time around. There are good zoners just like there are good midrange and rushdown characters.
People seem to think that they should be able make ONE good read and instantly get in (this goes to people who want a faster MB roll) but that wouldn't be fair for zoners, they have the right to keep you out as long as they can if they make the better reads. You have the options of walking, ducking, jumping projectiles, dashing in on a read, MB rolling on a read and characte specific stuff, you can't just do it mindlessly.
For example, against Deadshot you have to walk and duck his straight gunshot but after low rifle, mid shot or his multiple shot you can make a read with MB roll or you can get a dash in at worst. Yes, they can get a lot of chip damage on you and build meter but once you get in mid range or up-close, depending on your character's strenghts, you will probably take their whole lifebar and build meter yourself.
I main Cheetah and Wonder Woman, both have a hard time against most zoners but I have never ever felt hopeless at all against them because it's all about reads.