Spells as features is not bad design, but the new UA'sHexblade is

I'll keep this short. I don't think changing class features for spells is bad. It really makes no difference that a clearly fueled by magic feature is or isn't a spell thematically. People here calling it bad design because it "takes less effort". low effort =/= bad design. Just because something is easier to design doesn't automatically mean it's bad and vice versa.

Now talking abt the Hexblade. It isn't bad because Hexblade's curse was changed to simply cast Hex. It's bad because the entire subclass is the Hex spell and if you are not concentrating on it, you simply don't have a subclass at all. Like if you want it to be fully focused on hex you need to make it not require concentration by atleast 6th level instead it makes you unable to lose concentration via damage at lvl 14. This is really bad.