Am I being overly sensitive?

So a person in my life, very close to me, sent me a picture via text. The picture was some text that read as follows:

"With all this transgender talk going on, I feel it's time I share my secret....I'm transfinancial, which means I am a rich woman born in a poor woman's body...please send me your money so I can fix my financial identity issue."

After reading this I told this person that I found it to be offensive. I was immediately met with angry responses that turned it into somehow being my fault. I was accused of insulting thier intelligence, not giving them credit for being supportive of me in my decisions in this aspect of my life, and even overreacting.

I don't believe this person intended it to be an insult, but I don't think it was appropriate for them to turn this on me as they did. Was I overreacting or being overly sensitive?