I'm surprised that Samsung didn't release a cheap model like the S10e last year considering Apple is doing so well with their iPhone 11 strategy as well.
It's only a problem at a really large scale. At the scale of Microsoft or Facebook, there are factors that lead to the use of a monorepo being more efficient. At that big of a scale, companies have enough resource to develop internal tooling to deal with the problem (e.g. the use of Mercurial at Facebook).
"His room" and "his code" is not comparable in the context. "His code" is part of a business's product and can impact the livelihood of many people involved in the product including customers.
"His room" is a private space that doesn't affect other people. I don't tell my co-worker to clean up his side-project on github.
There's a reason he compared Reddit with Twitter and Facebook. You interact a lot with social media (commenting, liking, etc.) and also their content is much more dynamic and personalised.
Of course there have been. It also doesn't change the fact that children raised by good parents tend to turn out better. It's a numbers game just like most things in life.
It's now an epidemic, not at pandemic level.