Upvoted because you provide a detailed and calm post (which ironically is being downvoted!).

The internet does do a lot of good, but I don't think that it has increased negativity.

Instead, it's made it easier to communicate and see negativity.

As in, previously people would communicate within actual, physical social circles and often these would be (or inevitably become) an echo chamber for people with similar opinions.

But now, it's so easy to _communicate_ negative things due to pseudonyms and anonymity, plus it's easier to _see_ negativity because hundreds of different opinions are available in each thread - not just one or two opinions in the pre-internet, echo-chamber days.