There is no reason to think you are going to stop at equipment.
Why?
You're going to assume all types of things about my character and then "punish" me when I don't have evidence to counter your assumptions.
This is at the least a huge leap. Fundamentally this is a question of adjudication of a proposition. The player offered a very simple very straight forward proposition with no adornment. The player got a negative consequence. The player then retroactively tried to adorn the proposition with a previously never before mentioned, disclosed, or used tool for which the player had zero evidence that he even had much less was wearing. The player now is demanding a retcon.
No one here is being "punished". The GM in question used the best available evidence to adjudicate a natural proposition in the most natural way. That is not GMing in bad faith. I have previously outlined any number of extenuating circumstance that would cause me to give the player the benefit of the doubt - wearing armor (implied to also have gloves), having gloves listed in ones equipment, even so much as having an illustration of the character shown to be wearing gloves, or even simply knowing the player to be one who has been scrupulously fair and reasonable in the past. All of that is fine. "I want now to be wearing gloves just because." is not reasonable, and is just obviously bad faith and anti-social gaming.
Everything else is people trying to wiggle out of that quite obvious truth. Probably solely to avoid table arguments preemptively yielding to the demand to get the game going.
"You got a bladder infection because you never said you went pee. You died from the infection because you didn't say ..."
This is such a ridiculous leap that I really feel you ought to feel some shame offering it up.
Simple: It's adversarial.
No it's not. There is not a single thing adversarial about adjudicating a natural proposition offered by the player in the most natural and logical manner. One can only imagine the howls that would be going on now if we reversed the situation and had the DM give a negative outcome to the player for wearing gloves in that proposition that were not mentioned in the proposition, not listed on the character sheet, not referenced in the rules merely because the DM thought it was common sense that a player would be using them. One can only imagine the howls that would be (rightfully) going on if the DM added some unnarrated actions to the proposition that caused a negative outcome like "You crouch to the side as you lift the chest, flinching in fear as you look away, trying to avoid darts or other missiles, and as such you are completely taken by surprise and unable to dodge when a purple tentacle reaches out and grabs you". Again, simple natural propositions should be adjudicated in a simple and natural manner. There is nothing adversarial about doing that.
What's adversarial is demanding gloves you didn't mention, didn't put on your character sheet, and aren't referenced in the rules only after learning that there are possible negative consequences for not wearing them.