Internet is 90% porn

[snopes]

Comment: The received wisdom I've heard for many years is that "the
internet is 90% porn". A couple of weeks ago, I saw a British TV show
called IQ, where the host Stephen Fry stated that in fact adult-content
websites only make up a small part of web content, but that the majority
of internet traffic is largely spam (which of course includes much 'blue'
stuff).
Which is true?