No, a man is not considered gay if he wears a thumb ring.
No.
People often say that if a man wears a ring on his thumb it makes him gay. No, having sex with other men makes you gay. A plain silver ring in my opinion can look good on some men's right thumb.
He has a thumb ring on, for a man that age, I assume gay yes! That is a sign.
No. In fact there is no standard of wearing anything in a certain place to show that you are gay. These codes were sometimes used in the days where being gay was considered bad, and most gay people were closeted.
You might be a cool person but don't act like a gay-y. this ain't a style.
In communities where being openly gay can be dangerous, gay people usually adopt some discrete signal. Then the word gets out so the signal gets changed. (When I was in high school, the signal -- supposedly -- was wearing green socks on Thursday.) But whatever the signal is, it's just a way to start a conversation: "I like that ring. Where'd you get it?" If the guy is gay (and if he's interested in you) one thing will lead to another.
No it is not.
Marie on fox 25 news wears a thumb ring, she was married but atlas her main squeeze split and she is raising her child, who's under the covers with her?
No. There are no secret signs of being gay.
It depends on the culture. In the United States and Canada, it's customary to wear the wedding ring on the left hand. Being gay has nothing to do with this. Gay people wear their rings on the same hand as straight people.
Unless they choose to wear them elsewhere they still wear then on there ring finger of the left hand.