The Terrifyingly Prescient ‘Serial Experiments Lain,’ 20 Years Later (2018)(theringer.com)
theringer.com
The Terrifyingly Prescient ‘Serial Experiments Lain,’ 20 Years Later (2018)
https://www.theringer.com/tv/2018/7/9/17544220/serial-experiments-lain-anime-20-years
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.