Inserting Tables help section [1] has a Windows-specific part: > DDE link (only under Windows) > Table structure and contents, without formatting. With updating [1] https://help.libreoffice.org/latest/en-US/text/swriter/guide/table_insert.html?DbPAR=WRITER It is wrong that it is specific to Windows. It works on any platform; copying a part of table from a saved Calc sheet, in Writer, both Paste Special dialog, and the Paste toolbar button's drop-down list contain the DDE item.
Olivier Hallot committed a patch related to this issue. It has been pushed to "master": https://git.libreoffice.org/help/commit/dab0c782e5d051741a7a3b103a55ae591783b627 tdf#157180 DDE links works in Linux and Mac