Wow. What a jerk. It's too bad there are TSOs like this who think they are God. I mean, how dare a pax ask a question? Or politely request that they change their gloves? I fully sympathize with passengers when they make a request like this... I mean, who wants gloves with God-knows-what (and who) all over them inside your bag and all over your clothes and belongings? Gross.
This attitude has to change.