Samsung requires a Samsung account? Since when? I've used them since 2014, never had a Samsung account. Still don't, and have a Samsung TV.
Not sure what you mean by "non standard phones".
iOS "requires" an Apple account if you want to store anything in an Apple account. Android "requires" a Google account if you want to store anything in a Google account.
I've used both without an account. And Samsung devices don't require a Samsung account at all.