Subtitle Warnings?

Did I hear somewhere that subtitles are now going to be strictly controlled on Amazon? I thought I’d read or heard that the genre description inside the subtitle is no longer going to be accepted.

Thinking this, I reviewed the Metadata guidelines (https://kdp.amazon.com/en_US/help/topic/G201097560) but saw nothing of the sort.

Is it still good practice to use the subgenre information inside the subtitle?

For example: Lynn Austin’s book’s title (subtitle): If I Were You: A Novel (A Gripping Christian Historical Fiction Story of Friendship and Survival Set in London During WWII and Post-War America)
A