I've heard this many times. I have never had a mini USB plug or cable fail. I've had a couple micros fail on me in cheap devices.

The future I fear is far worse, my current phone, OnePlus 5t has the second failed USB-C port, my previous being a Google Pixel. USB-C cables connections in my experience become weak after maybe 50-100 uses.

I never had a single problem with a long line of micro phones.