Except they don't collect, process and pay international tax like EU VAT. Or California sales tax etc. You have to correctly collect it and file it one by one.

So Ghost is not a creator platform. Its a payment platform.

Ghost is a platform for creating content. Ghost partners with Stripe to handle the payments.

For a customer who runs a small town Indiana newspaper, who may be a somewhat typical customer, it's not that complicated: They won't have international subscribers and they would pay state and federal taxes-- standard income staff stuff.

And doing so with Ghost vs Patreon could save thousands of dollars per year!

Not really - because, with Patreon you can very probably report your income as 'Patreon income', whereas with Stripe, you will need file each and every single income that enters your account because Stripe does not do that for you.