I’ve read about someone’s experience once that less detailed release note releases are more likely to be approved by store moderation without issue.
It’s probably more laziness / not seeing enough value in it though.
I see lacking release notes everywhere - in many projects.
Sucks when you’re trying to asses necessity, risks, and changes of updates of apps, service infrastructure, or libraries.
Good release notes are not hard if you have a good workflow. At my work project it’s basically automated generated - thanks to a deliberate and conventional commit workflow.
But few people see the need, the value, or have the initiative and thoroughness that would establish it.