Can it be done any easier than drawing ONE angled thin line and then using step and repeat?
afaik, no, if you aren't in a play mood and don't want to give a try for an empty table - one column, lot of lines with thin outline.
Just one object, no need for grouping, easier to manage, adjust thickness and density of lines...
However, both are workarounds, not a real "background pattern"...
I saw a job of Bob's once where he needed a fast and dirty striped background and he used a table with alternating fills, no text. Presumably you could do that then rotate the containing frame. Tha might be a bit easier to control if it needs tweaking.
a table with just diagonal lines in the cells would work too, if the cells were square.
A different workaround?... LOL
New Stroke Style > Dash
Pattern Length: 3mm
Apply it to a thick stroke, rotate it... then you can play with fun effects... woohoo
I realise that this isn't the answer... depends on what people do and how then do it.