MacOS – Why does iTunes sometimes decide it HAS to stay open at any cost and to reopen every time I quit it up to crazy numbers of quit or force quit

This happened yesterday, and I posted on Quora. No answer. It happened again today, so here I am cross-posting.

Sometimes, iTunes decides that, despite me quitting it, the right thing is to be open, with the result that I have to constantly quit or force quit it over and over again. It happened today, and between 10:35:01 and 10:44:33 I had to quit it OVER THIRTY-THREE TIMES. It happened yesterday as well, and between 9:35:26 and 10:28:27 I had to quit it AT LEAST FORTY-NINE TIMES.

Not only does it open, but it plays random stuff that it's got in its "All". Luckily most of its picks are low-volume MIDIs from stuff I wrote on Finale, but it's still extra annoying because it typically happens as I am checking song lyrics so I have to listen well and the extraneous tune is distractive.

I thought it might be an update check, so I turned auto-checking for updates OFF in the settings, but to no avail.

After many of those 49 times, I tried deleting iTunes (a drastic solution given I basically never delete anything), but it is "required by OSX", so nothing happened.

I am using Mac OSX 10.9.5, though I'm pretty sure this madness happened with my older 10.7.5 too, and iTunes 12.2.2.25.

So what in the world is going on, and how do I stop this fu…, err, copulator from doing this nonsense?

EDIT

Looks like the culprit are my earphones. In particular, there is this thingy on them:

I note that, on my mobile, if I press that, Google listen is triggered almost all the time. The exceptions are typically when I pressed it under 5s before. The same effect is registered on the Mac with iTunes instead of Google listen. It also seems that thing is faulty, because thise things trigger even if I don't press the thingy.

So is there a way to disable this trigger?

(Btw, another thing that gets triggered on the mobile sometimes is the ringer or media volume, and the volume also very rarely gets triggered on the Mac. No idea what triggers that though: the thingy triggers iTunes and Google listen, and there is nothing else on the headphones except for the thingy where the two cables for the ears join into the one that gets plugged into the earphone hole, but that doesn't seem to trigger anything.)