I have been rewatching this wonderfully convoluted anime a few times every year for the last 10 years, it just tickles something in me.
I don't think it's really about the internet, technology just fits into a larger social commentary on the interconnected and flimsy nature of our functions manifesting themselves in maladaptive ways, from sub-cultures to religion and corporate culture. The show mostly frames this within themes of identity and connection.
That being said the show is purposefully open to interpretation, almost like it's a play on just giving you enough to create your own potentially distorted meaning.