When you manually insert text, then all is fine as it is now.
When you use text fields, however, it can become very tedious catching overflow after the boxes have been populated. This will be the case in many fields in a “Title Block”, for instance.
(and then there is still the bug where, when shrinking a text box (or leader) with text fields, the displayed text is the %text field% instead of the text - RH-43510 and RH-44247)
(CC: @stevebaer because of RH-48063 )
At any rate, it’s rather important to be able to define a text region before it gets populated.