You're speaking way too strongly. Email is a huge success, it's potentially the most successful network. I've had my email address over a decade and get less than 1% spam, handled by gmail spam filtering.
You can say that you personally want moderation in your networks, but you have no basis to make general claims about moderation being necessary.
> ... get less than 1% spam,
> handled by gmail spam filtering.
I'm starting to see more and more reports of people having their emails automatically go to gmail spam folders, unless the emails are coming from gmail itself. I've seen both sides of this - gmail regularly bins emails I sent from a non-gmail account, and my gmail accounts regularly bin genuine emails from non-gmail accounts, but apparently never from gmail accounts.
It's almost like there's a pervasive force, trying to make people use gmail.
I don’t think garbage and success are mutually exclusive in this regard. Email is a huge success, and is an important centerpiece of most of our online lives, but as said, most is spam.
Gmail spam filtering is moderation, which is being argued that without which, email would be near unusable, which is true for most.
You can say that you personally want moderation in your networks, but you have no basis to make general claims about moderation being necessary.