Hello,
Thank you for pointing this out to us. We have contacted the team internally to update the blog post to reflect the date correctly. For your concern, the report itself will continue to be accessible but it will not return the display keyword stats for Search campaigns with Display Expansion. We do not have any update to share if the functionality for display campaigns will be deprecated. Please keep an eye on our blog post for future updates and announcements. Also, the statement indicates that the view to attribute stats to keywords has been removed from the Google Ads UI to improve targeting for these campaign types and will be applied to future stats retrieved in the reports. Let me know if this clarifies your concern.
Regards,
Nikisha Patel, Google Ads API Team