Good points, but my poles all fit my tarps fine. I don't need more that 4 feet of headroom. If I want something taller, I simply lash on a stick.
Collapsing poles....this happens when I've stepped off of a steep drop off, 1' or so, putting my weight on the pole. Usually happens after the slip joints get dusty after being out in the field a while. And, I bet I'm heavier that you are.
The only time I mess with telescoping poles is if I'm flying somewhere and need them to fit luggage.