So what? You found a group of second wave feminists that are anti-porn, with their positions exaggerated by a sensationalist story.
It's not like that's a rare occurrence. For decades, Andrea Dworkin was dogged by the urban myth that she said "all sex is rape".
There are socially conservative feminists (first and second wave), socially liberal feminists (third wave), and lots of splinter groups that are somewhere in between. There is bitter, intense in-fighting between these groups, and there are quite a few feminists who'd agree with you that anti-porn crusaders have given feminism a bad name.
For what it's worth, the current vanguard is actually quite tolerant of porn. They generally call themselves "sex positive feminists".