I think everyone should have a right to express their opinion, but these sly little digs from Emma Watson are so lacking in class.
It's just not necessary.
Emma Watson has the fame and fortune that she does because of JK Rowling. As a ten year old child she had a physical resemblance to the fictional character of Hermione Granger and an annoying know-it-all personality which fit the character very well. I suspect that the casting agents also correctly guessed that she would grow up to be very good looking. Because of this she was cast in a lead role in an eight film adaptation of one of the most successful book series ever written. It was an astonishing stroke of good fortune for someone who, as her subsequent work shows, can't really act.
She might disagree with JK Rowling on the trans issue, which she is entitled to do, and she might feel strongly compelled to express her views about trans people's rights and about feminism, which she is also entitled to do.
But the little personal digs at the woman who made her famous (without ever being daring enough to come out and say "JK Rowling is a horrible TERF") are just unnecessary, mean and childish.
It's like, "I'm famous now, need to stay relevant, JK Rowling is persona non grata in the circles I move in, so I need to demonstrate my cool credentials and my loyalty to the pack by dissing her."