Making money of old videos might change, if video suggestion algorithm prefer new content. Some suggest that it already have changed: https://youtu.be/03dTJ4nXkXw
If you're relying on your videos getting views for your monthly pay you shouldn't be relying solely on some constantly changing algorithm.
> especially if you're funnelling in viewers from outside the YouTube algorithm
Right. You should also be blogging, engaging with others on forums, having a solid social media presence, etc.
Especially if the content is truly evergreen. Chances are your audience has grown a year or so after posting it - tweet/fb/etc it out again!
Yeah, even with reduced discoverability evergreen content is very possible as long as you've got any exposure at all. I will often watch videos from the backlog of content creators I have newly discovered.