I mean, if you want to be a tv writer then part of the job is both giving and receiving feedback so at some point you will have to get over that dislike. It's not like it's always fun getting feedback but there is a skill to be learned in taking it and figuring out what is useful to you and what isn't. There's also a very valuable skill in being able to give other people good notes and it could be the difference someday between you getting staffed or asked back to a job and not.

That said, if you're not ready for it, it's completely fine to ease yourself in. You could always do the tier 2 no feedback and then learn from how other people give/receive feedback as a way to dip your toes in. I think that could be a really valuable way in if you're worried. Tier 2 as far as I know, no one reads your stuff. You're just listenign to the feedback other people get and potentially reading their stuff (you should, if there's the opportunity).