This whole argument is so dumb.
Destiny made the "threat" in a public chatroom "if she leaks my sexting"

Even taking max's claim that this was to silence her the "threat" by itself was an admission that there was sexting to leak, she then had zero reasons to leak it to prove anything.

You also won't be able to understand why it was a joke because mrgirl omitted the month of context where ana was claiming she was afraid "destiny will leak nudes" because he dared to leak text messages which proved she had been harassing him.
Clearly, the guy capable of leaking text messages is as capable of leaking nudes am I right? /s
She then claimed she could release "50 shades of destiny" of his sexting. That is when the "threat" came.