JIRA REST API deprecation of requesting hierarchy by issue links

In https://developer.atlassian.com/cloud/jira/platform/deprecation-notice-hierarchy-levels/ it is announced that support for issue-parent relationships in issuelink-related operations is stoped.
My question is (and could not be answered by Jira support):

We are using a Standard plan and the Jira Python Lib to grab data exports.
Do we understand this announcement correct in terms of

  1. In Stories / Task exports we no longer get the possible epic by:
    “customfield_10008 (Epic Link)”: “FOO-499” ?

  2. In Stories / Task exports we no longer get the possible sub tasks by:
    “subtasks (Sub-tasks)”: [ {…}]

  3. We have to use the
    "customfield_10700 (Parent Link) → Premium Feature only

So will requesting hierarchy be only possible if you use Cloud Premium?

Would be soooo great to get clarity here.
Thank you!