I do not believe Apple will make a distinction based on corporate structure - if you support creating an account, you need to support deleting it. If you can't support deleting it, you can't support creating it in-app.

That said, I would argue that there is no Ethereum "account" - it's just a crypto key. In that sense, use on Ethereum is similar to someone using an email address to sign up for mailing lists and to post on forums.

The counter-argument is that your wallet app likely provides the interfaces to do that functionality, which makes the Ethereum blockchains a proper system under consideration.