Hi there, @windkeeper.
Thanks for taking the time to share your concerns here in the QuickBooks Community.
Pop-up's are designed to to suggest and guide you on how to improve your QuickBooks experience. I understand that the ads may affect your navigation, however, the option to disable them permanently is currently unavailable. For now, the only way to remove the ad would be to click on the X as you're doing.
I understand the importance of having the option to ignore these ad pop-up's, so I've gone ahead and submitted this suggestion to our Product Development Team. This way, it will be considered in a future update to be removed. Please know that our Developers are working nonstop to enhance the product and deliver the best experience for all QuickBooks users.
Please let me know if you have any questions or concerns. I'm always around to lend a hand. Take care!