Help for Insert Rows says its in the Insert menu -- its actually in the Sheet menu, and there's no longer a keyboard shortcut (used to be Alt-I-R).
You can get some information about menu changes in:
No idea why should the UX-Advise list be spammed with bugs like this. It is enough to block the help meta bug.
Patch submitted to Gerrit:
Stanislav Horacek committed a patch related to this issue.
It has been pushed to "master":
tdf#97807 Calc menu changes for inserting rows and columns