Some fairly wild claims were put forward
"Woods' figures - which he later described as "just figures""
So, another bunch of idiots pulling numbers out of their asses.
"children frequently and accidentally exposed to wholly inappropriate material, such as bestiality and child abuse"
frequently and accidentally? What a load of crap!
I've been using the internet since day 0 and I've hit bestiality once (a typo landed me on a horse blowjob page) and I've never hit a child abuse site, maybe a few pictures of girls that could have been 17 and lied about their age. What I have been exposed to frequently is sensational "news porn" about such sites.
"gateway to an interest in such material"
The gateway argument... we don't like this but can't even make up a reason why it's bad, so it's a gateway to something bad.