I'll stand by what I said. The assertion was that they were widely used. Your own assertion matches mine. Neither a $1 dollar coin nor a $2 dollar bill is widely used in America. Period.
For some reason, $2 bills have always fascinated me. Every time one has come into my hands in the past 15-20 years, I stick it in my desk drawer. I probably have 10-15 of them in there. I'm not a coin or currency collector of any kind, just these $2 bills. I know, weird.
So, certainly not widely used. Forget the $1 coins, don't think I've ever given or received one.