I see your perspective, @hotdogmaster. I'm here to provide you with all the information you need to remove your phone number from your Account and Settings page efficiently.

I can see the benefit of the option of removing the phone number to the settings. However the posibility to remove the phone number is unavailable as it is a required field. With that, I recommend submitting a feedback to our product development team. Our engineers will thoroughly review your suggestions and may consider implementing them in the future.

I've also added this article for more information about purchase orders: Create and send purchase orders in QuickBooks Online.

Moreover, you might want to scan this material for guidance on adding your purchase order as a line item to vendor transactions to keep your record accurate: Add purchase orders to expenses, bills, or checks in QuickBooks.
 

This thread is always open if you have additional questions or concerns about purchase orders. I'm ready to help you out.