I think JK got co-opted a long time ago. She's always been a lib and as she hangs out with H'wood it's harder and harder not to be affected.
You are so right - I read she’s a big friend of Gordon Brown and his wife - says it all - but I admire her intelligence and creativity so much that it’s hard to sit by and see her deluding herself and ruining the HP story for her fans - the first indication of self-destruction was outing Dumbledore - shameful and not necessary...