He addresses that too. The kind of "squabbling" you have in your mind is far from what kind of "squabbling" that actually happens in practice. In practice you have death threats, doxxing, and a lot more animosity than the fun "Squabbling" you're thinking of.
could it be because we have lost our right to anonymity? in today's internet 'culture'(i use the term loosely because its not a culture..its more of a marketplace), the user IS the product. twitter et al is the pimp.