This is entirely from YouTube ads, since at the moment I don't use Patreon, sell merch or run sponsorships. And it's for a channel with approximately 33,000 subscribers.
So I can definitely back up this point from the article:
> Only a handful are getting rich in the process. The drive for many of us is to add value to the world and share our knowledge.
Unless you're in a very lucrative niche (usually finance), you'll need hundreds of thousands if not millions of subs to make a living through YouTube ads and content creation alone. Hell, if you're unlucky enough to be in a field where creating content on a regular basis is tricky or overly time consuming, or where ad clicks are low (usually animation or music), then you may struggle to make enough for a living even then.
Of course, other means of monetisation do make more money than ads alone. If you've ever wondered why ever big YouTuber starts with an ad for Raid Shadow Legends/NordVPN/whatever, that's because those endorsements are a more reliable way of making money than ads alone are. Same with Patreon, donations, merch etc... anything that isn't at the whim of Google is a much more sustainable way of paying the bills.
But yeah, unless you're absolutely huge on YouTube (or have a decently large following in a very high paying niche), then it's not something you'll be able to turn into a realiable day job, let alone a high paying, FAANG software engineer level one.