With all due respect, this will be true for a while and then it won't be true at all as the connector will have damage from repeated small sparking.
My shop stereo was four UPM-1P's for a few years and I used a Powercon barrel to turn the agglomeration on and off, no music playing at turn-on/turn-off.
After a couple years that barrel and the Powercon->Edison stopped working.
True, it was four and not one but the principle is the same IMO. Small load can wreck Powercon when twisted while on.
One person's anecdote FWIW.
Yes indeed and good point. Depending upon usage, this stuff wears out - with or without the arcing - that speeds up the process.
I did a job for a colleague many years ago, 4th of July show on the infield of a dirt track. He sent me in his truck, his gear and his assistant. Told me the basic configuration of things - this was back in the mid 80's and he had racks of BGW 750's & 250's. Anyway, I discovered the 1/4" TRS and XLR connections had "character" or some personality to them. Scratchy and inconsistent connections, had to wiggle things around a bit and change out a cable or two. This applied to some of the 1/4" TRS stuff in and out of the EQ's & crossovers and several of the XLR females.
I guess over time, he was used to quickly going through connections, I wasn't and with a foreign system and under the gun to get things up and running before the gates opened I could have done without the extra excitement.
Which is why today I never patch in and out of gear, stage boxes, amps, whatever. Rack 'em up with patch panels that can be easily changed or repaired out if/when they wear out. Same holds true for cable reels and XLR cables. I don't use them, just hand roll individual cables, Velcro strap them together and throw them into a drum case.
RIP Robert "Bob" Martin of Band Aids.