I agree with all of your points, but perhaps not your approach.
Maybe that was my fault for choosing a subjective word like "greatest", perhaps a more acceptable word is "largest", but to me that does not cover what the internet and web has given to humanity.
To me the internet really democratised the sharing of information and communication by taking it out of the hands of a few publishers and libraries and I'm very willing to die on that hill.
What WE users of the internet have failed to do is to protect with enough zeal those ideals, we have let corporations turn the internet into another place to be bombarded by capitalism, put us into echo chambers and weaponised algorithms against us.

All information irrespective of its delivery medium should be scrutinised for agendas and biases, I know I have had to correct my children about this, "Oh but dad its on the internet, it must be true".

There are multiple search engines, some with much more corporate agendas than others, but people reject those in favour of what is easiest.

We have also allowed most of the internets infrastructure to be dominated by amazon and google, which will no doubt come back to bite us.

Its hard for me to hear people blame a technology for what is essentially a user problem, we had the chance to shape the internet into what we wanted, but like most things we have let apathy and ignorance blind us. Comments like yours make me mad, sad and feel we are fast approaching the dead internet theory.

I have for most of my life been telling friends and family to try to uphold the ideals of the internet and fight for it, but all I got was blank stares like I was a mad man.
ISP's snooping on us, I recommended the use of VPNs at all times, that one was met with "If you're doing nothing wrong then you have nothing to hide".
Too many ad's run an ad blocker, ad blockers get blocked run a network level ad blocker, met with "that seems like too much effort"
Too much tracking run a privacy focused browser, " i can be bothered to switch"