Yes, the email is sent to everyone apparently.
But if you look at an app in AppStoreConnect, you will get a specific notification if you need to update.
Here it is for one of our apps (in French, but does not matter) when all age information was not yet completed:
I could see the age information (7 views) but could not update.
I noted that information update must be done before January 31, 2026.
So I submitted a new version (very limited changes), completed information (this time it was possible), incremented build number, and now message is gone:
Topic:
App Store Distribution & Marketing
SubTopic:
General
Tags: