Thanks for sharing your review in the Community, @fl3tty.
 

Currently, this is the best option we can provide in QuickBooks Online (QBO) regarding deleting an account in COA. This is to make sure you have a record of the deleted (inactive) accounts.
 

I'll submit this feedback to our product engineers. They can check to see how to implement this option and the implementation vary on the number of feedback we receive.

You may visit our QuickBooks Blog to stay current with the hottest features and QBO product updates.
 

Please feel free to leave a message in this thread if you need more assistance. I'll be happy to help. Take care!