You are probably right about all of that, P. But the bottom line is this:
1. You don't have to be concerned with disconnecting and reconnecting the cable. I've proven that by not disconnecting them as my SOP for many years now.
2. Because of number 1, you don't have to be concerned with any possibility of a short shelf-life for those connectors.
You probably know me well enough to understand that I like to see evidence supporting any internet "factoids". But another thing about me is that if there is enough doubt cast on something even without evidence (such as whether connectors were or were not designed for robustness) I think the smartest thing to do is to use caution, just in case that "factoid" turns out to be a real fact.
And the good news is that it doesn't even matter. But if you are someone regularly disconnecting and connecting those connectors, you will then not be surprised when on connection number 51, things don't work out the way you might have first planned.
So the word to the wise here is still "be careful" and "minimize the number of connections".
I can't remember the last time I saw someone posting about removing the jumper cables when doing a reset to get to the internal drive. I wouldn't do it.
I would caution anyone with a Thermaltake docking station not to use the on/off button, they're really flimsy and break easily. I've broken two of the switches myself. I'd just leave them in the on position and pull the power cord from the dock and then do the resets.