Maybe it was the reality TV, but I wasn't too moved by Jenner's public transformation. Anyway, thought about the above sentiments when reading the following.
I don't think Caitlyn is re-defining what it means to be a women as much as she is trying to define herself. I certainly don't think she is staking her "claim to dignity as transgender people by trampling on mine as a woman". Not sure who the person being quoted is, but I whole heartedly disagree with the first part of what is being said.
The point (and sad fact) of what Jon Stewart said, was soon as Caitlyn became a women, trying to define herself, she was automatically and systematically relegated (by both sexes, no less) to a tiny niche of being-ness: her looks. So as she tries to define herself, she ends up being defined in ways she probably wasn't expecting/wanting. Her only 'power' now will come from how good looking and fuck-able she can be.
If anything, transgendered/sexual people are restoring female 'dignity' by forcing some re-working of how we treat and categorize all sexes and genders.