Where in the world did you read this? That's news to me. A clean install may help, yes...but a new Apple Account won't do a darn thing. If you still want to continue on with your mission, you can email shareable passes to yourself and add them back from your emails. Non-shareable passes and cards will need to be re-added however you got them in your wallet the first time.
Also, keep in mind that if you have any apps that have been delisted from the App Store, but are still on your phone, you won't be able to get those back with a new Apple Account. You'll also lose all your purchased items (apps, music, movies, books, etc.) unless you repurchase them again or sign in with your old Apple Account (or by
linking/merging your two Apple Accounts). If you have to do that, then there's really no point in getting a new Apple Account in the first place.
Lastly, do you plan on doing the same for your Mac and iPad? Those will need to be using the new Apple Account if you still want the seamless integration between them all.